It's probably easier to name a Looney Tunes that doesn't use this trope. Among those that do:
In A Feather in His Hare, an Indian reaches into Bugs Bunny's hole and Bugs hands him a mouse trap, causing it to snap on his finger and inducing great pain; as he's running by trying to shake it off, Bugs places two more mousetraps, causing him to step on one, then the other, and to scream even louder.
The gremlin in Falling Hare twice smashes Bugs Bunny's foot.
Deputy Dawg offered his boss, the Sheriff, what he thought was a watermelon. Actually, it was a painted river rock. DD lifted it, found it remarkably heavy, and then dropped it on the Sheriff's feet! The reaction was one of the greatest of this trope...the Sheriff's mouth stretched to the size of his body and a loud howl was heard throughout the land!
This was a Running Gag in the episode "Store Wars". Bloo kicks several people in the shin before running away and calling them a "rip-off artist." He later suffers this fate from Coco at the end of the episode.
Towards the end of the episode "Imposter's Home for Um... Make 'Em Up Pals" Frankie becomes furious with Goofball and chases him around the house. When she grabs his arm, Goofball stomps on Frankie's foot to make his escape.
The Simpsons, more than once, and with more body parts than just the foot. Which is actually a plot point in the first Sideshow Bob episode.
In one of the TV specials, Snoopy taps a baseball bat on his foot, and as he's not wearing cleats, it hurts him quite a bit.
In another, he and Woodstock are acting as officials at a football game. (Charlie Brown's school could throw a homecoming parade but has to have a student's dog officiate the big game?!) Woodstock is handling the down counter that marks the line of scrimmage: basically, it's a pole with a sign that can be changed from 1 to 4. Guess where it goes.
Happens with great regularity on Tom and Jerry. In one memorable instance, Tom is about to hit Jerry with a hammer when Jerry offers him a much bigger mallet. As Tom takes the mallet, Jerry picks up the first hammer and whacks Tom's foot with it. Cue Stock Scream from Tom.
Wonder Woman: These shoes are killing me. Batman: You fight crime wearing high heels. Wonder Woman: High heels that fit!
Not even superheroines are safe from kids, as Stargirl found out when in Japan and attending a Supergirl convention. After she complains about the attention Kara is getting, a chubby little Fangirl goes over and kicks her in she shins for insulting the better-known heroine.
A good one in season 1 episode 22: Sadlygrove is suffering from heat stroke in the desert, and is convinced the ruin he's stumbling toward is just another mirage. So he gives a good kick to its stone wall — barefoot. Cue the one-legged dance.
Shortly happens to Yugo in season 2 episode 1, from a gerbil's bite.
In season 2 episode 5, Sadlygrove gets bitten in the leg by Evangelyne turned into a pig.
Ruel gets his foot stomped by his grandmother in season 2 episode 7.
Ben Tennyson's first transformation into a fire-based alien results in his cousin, Gwen, not recognizing him and spraying him with a fire extinguisher. The best response Ben can come up with after years of abuse from his cousin is to set her shoe on fire.
Happens again to Gwen when a transformed Ben runs into her leg while attempting to flee from the Forever Knights.
In "D.W. Blows the Whistle" on Arthur, Arthur is astounded to hear about D.W. being a hero for having stopped a little kid from crossing the street without looking both ways first. "D.W., a hero?" he questions and then he drops a wrench he was holding onto his foot and starts hopping up and down.
In The Teaser of "Prunella Gets it Twice", Arthur and Buster carry a giant crate to Prunella, when Arthur sets the crate down, and accidentally on Buster's foot.
Codename: Kids Next Door makes use of this gag in Knightbrace's debut episode, "Operation: T.E.E.T.H." Numbuh Three accidentally shines her teeth in Numbuh Four's face. Numbuh Four previously got his mouth saddled with humongous braces, so he falls over and drops his giant braces set on Numbuh One's foot. Numbuh One reacts predictably.
At the beginning of "Working on the Railroad", musical segment of The Alvin Show, Simon (of all people) does this to Dave with a sledgehammer.
This gag is used in the very first episode of Island, when Eva arrives on the island she drops her bag of dumbbells onto Cody's feet.
Set up but then surprisingly averted in the Action special. Non-Action Snarker Noah kicks a bulky television set, but instead of the expected result the television is flung off screen and Noah remains uninjured.
Happened in the episode "If It Smells Like an Ed". Ed is carrying a block from a sidewalk, and when he stops to get a handkerchief out of his pocket for Jimmy he drops it on his feet. He's motionless for about five seconds, but right before the show cuts to a commercial, it shows him walking on his hands with his feet bandaged.
In the episode where the Eds lead the other kids to believe there are "Mucky Boys" on the loose in the cul-de-sac, Eddy gets the idea to have them follow Mucky footprints, by smashing Ed's feet with a mallet, causing them to swell to roughly the size of a car.
Played for Laughs in Phineas and Ferb: Doofenshmirtz has concocted an Evil Plan to get revenge on an ice cream man who ran over his foot the previous day, resulting in him having to wear a cast. In the ensuing fight with Perry The Platypus, he injured the other foot, causing him to hop up and down holding his foot, only to have to switch which foot he was holding because the act of hopping caused his already injured foot to hurt again. Once he started doing this, his newly injured foot started to hurt because he was hopping on it, and so on and so forth.
Tummi Gummi also fell victim to this trope in the Adventures of the Gummi Bears episode "Someday My Prints Will Come". He blames the machine that he found for causing all the trouble then kicks it, causing him to hop around in pain while holding his foot.
Taken to an extreme on Archer; while fleeing the KGB in Russia, Archer loses his shoes and has to go barefoot, and ends up stepping in broken glass. Then he gets new shoes, loses them again, and steps in more broken glass. He spends the whole chase screaming in pain with every step.
In the episode "What's The Big Idea" of The Powerpuff Girls, the title heroines are turned into giants by Mojo Jojo. While trying to catch him, Buttercup steps on a power line, reacting predictably.
In "Franklin and the Pinecone Pass" on Franklin and Friends, Franklin gets so frustrated and upset that Bear wants to play Rabbit's new game (Pinecone Pass) instead of playing with him that he kicks a rock, hard. (Too bad he doesn't wear the shoes described in the books' traditional opening.) He hops up and down, clutching his foot, and a just-arriving Beaver reminds him that it's balls that are good for kicking, not rocks.
In an episode of Rugrats, while at the park, Chuckie steals Angelica's shoes. Angelina angrily tries to chase him, but steps on some thorny weeds and hurts her feet. She then puts on Chuckie's shoes and continues the chase.
In Hey Arnold!, while tensions between Arnold's family and neighbors.
Ernie: Gramps stepped on my toe! Grandpa Phil: I did not! This is stepping on your toe! (STOMP) Ernie: OW!
In "Ducking Out on Valentine's Day" on PB&J Otter, after claiming he's glad there's apparently no Valentine for him from the Snooties, Flick kicks one of the Valentine crates, hops while clutching his foot, and then claims he's late for his foot doctor's appointment.
In "Calling Dr. Zak" on Dragon Tales, this happens to Zak after he steps on a spinypine thorn, though it's his sister Wheezie's foot (they're a two-headed dragon) that hops up and down while his foot, with the thorn in it, stays off the ground.
In the third act of the episode "Meet Mr. Bogus", this happens to one of the plumbers, when his partner inadvertently sets his toolbox on his foot, which causes him to hop up and down in pain.
This also happens to Bogus in the first act of the episode "Et Tu, Brattus?" after kicking the inside of the box trap that he was confined in.
Happens twice to Bogus in the episode "Good Sport Bogus"; the first time in the second act, when Bogus ends up hurting his foot after attempting to kick a metal shotput, and the second time in the third act when Bogus winds up with his feet on fire after running really fast, before he blows out the flames.
Ratty also falls victim to this in the third act of the episode "Bad Luck Bogus", after a mallet that got thrown up into the air by Bogus earlier falls back down and lands on Ratty's foot, causing Ratty to jump up into the air in pain before coming back down while holding his foot in pain.
Robin seeks training from "The True Master". He is ordered to change into martial arts gi and remove his shoes. He hurts his feet on the rocky ground and complains, "The next time some crazy old woman tells you to leave your shoes behind, bring them anyway."
In "Only Human" Starfire tries to escape a forcefield by kicking it, resulting in her only hurting her foot.
Wunschpunsch: In one episode, Bubonic's feet suffered several Amusing Injuries before he and Tyrannia cast the Spell of the Week. Tyrannia planned to turn everyone into giants but Bubonic's whining about his feet during the spellcasting altered it so the victims only had their feet turned into giant sized ones.
Animaniacs has a shoe related version of this, as the Warners show up in the 1970s at a disco contest.
The Donald Duck short "Up a Tree" does it after one of Chip n Dale's tricks of making Donald fall off the tree he's attempting to saw in half. Not only does Donald land right on his feet (causing him considerable pain), but he then kicks the trunk of the tree in anger, which only intensifies the pain.
In the episode, "The Mask," Courage locks Muriel and Eustace in their bedroom while he tries to reunite Kitty and Bunny, but when they are unable to open the door, Eustace attempts to kick it down, but hurts his foot in doing so.
In, "Robot Randy," while Courage, Muriel, and Eustace are subjected to picking rocks, a dazed and exhausted Courage accidentally jabs Eustace's foot with his pick, causing it to swell greatly.
In, "Courage vs. Mecha-Courage," Eustace is missing one of his boots - for which he blames Courage - then ends up stubbing his toe on a chair - for which he again blames Courage.
On Peter Rabbit, this happens to Mr. Tod at the end of "The Tale of Mr. Tod's Trap" after he kicks a tree out of frustration from having been once again out-witted by Peter and the others.
The episode "Help!" has Paul getting a hotfoot thanks to a misplaced blowtorch.
In a series of bumpers, the boys are lost in a desert. The hot sand is scorching George's feet, as it is Ringo's. It causes Ringo to hop around madly, and it turns out that he had done a rain dance to make it rain.
In Wat's Pig, the dark rider hits the king in the foot for seemingly no reason during their first meeting. A servant rubs it in concern while the king lets out a loud scream heard by his unknown brother in the countryside.
Wander over Yonder: In the episode "The Night," Wander goes off somewhere to eat his midnight snack without waking Sylvia. But first he takes off his shoes so their squeakiness won't wake her. But as he walks away, he steps on a sharp rock.
In "Pineapple Fever", when SpongeBob is boarding up his house to prepare for a storm he steps on a nail.
In "SpongeBob LongPants", when Squidward is ordered to work the grill he accidentally drops a burnt patty on his foot.
Near the end of the M.A.S.K. episode "Disappearing Act", Miles Mayhem and Vanessa Warfield get zapped in the feet by shrunken M.A.S.K. operatives.
Kaeloo: In Episode 101, Kaeloo distracts Stumpy when he's trying to lift weights, and he accidentally drops the weight on his foot.
In the episode "Let's Play Danger Island Survivor", Stumpy's feet catch on fire.
This happens to Kumi in "Tomorrow Never Knows" from Beat Bugs when she tries to kick the rainbow brooch as a means of moving it. It happens again in "Hello Goodbye" when she kicks a phone, frustrating at not being able to figure out what it does. It happens to start ringing at that moment, leading her to think at first that it's a kickstarted music machine, at least until she starts hearing a voice on it. Later, when she brings the other bugs to see it, she kicks it again, this time with no results except hurting her foot.
In the beginning of the Madballs episode "Escape from Orb", Screamin' Meemie and Freakella are carrying a block to be used in building a monument of Commander Wolfbreath, and Freakella accidentally drops the block on Screamin' Meemie's foot.
In the Samurai Jack episode Jack's Sandals (XXVI), Jack's first attempt at fighting the Biker Robots after they crush his geta involve him stubbing his toes on their bodies when trying to kick them, burning his feet from landing on a nearby furnace, and finding himself unable to fight after stepping on glass shards from a window broken earlier that episode.
We Bare Bears: Charlie gets a broken foot as a result from falling off the roof in "Charlie's Big Foot".
W.I.T.C.H: in "N is for Narcissist," a barefoot Cornelia gets her toes stepped on, causing her to hop around in pain.