Hisagi's zanpakutou transforms into a kusarigama that possesses a blade at either end of the chain instead of a blade at one end and a counterweight at the other. As a chain weapon, he requires two hands to wield it properly and, because it has two blades instead of the normal one, it's a particularly lethal weapon.
Subverted with Ukitake. When his zanpakutou transforms, he gains two swords that are linked by a cord. However, the cord has a different purpose entirely. Ukitake cannot use his swords in accordance with this trope and is an example of Dual Wielding instead.
Rob Schneider has one of his characters do this in a movie set in a prison with two bars of soap, and we are even shown him working on them with a prison shiv so he can affix the rope to attach them.
One of the titular 3 Ninjas makes a set by grabbing a piece of conduit pipe and bending it in half, with the wires inside keeping the two pieces together.
Live Action TV
MST3K had Joel & the 'Bots come up with several "'chucks" during a break while watching Master Ninja. They included "up-chucks (plastic vomit)," "nun-chucks (nun's habits)," and "Chuck Woolerys (covered in wool)."
The sketch-comedy Almost Live! did a series of Kung-Fu parodies in which the combatants sometimes construct nunchucks out of harmless everyday objects.
Jimney Kimmel has Osma Bin Laden use knife-chucks to fight a gun-chuck wielding Fifty Cent.
In Last Ninja 2, the ninja can make nunchucks from... two toilet pulls found on the first level. (At least, that's what it looks like, since he finds them in toilets.)
Fighter of 8-Bit Theater had the grand idea to connect two swords together and make Sword Chucks. They become a Running Gag throughout the comic. Pretty much stopped after he got them, for a while anyway.
Uncyclopedia had a list of fictional melee weapons the contributors wish was real. It included Bananachucks, Weasel-chucks, Sword Chucks, and Sephiroth-chucks.
Futurama - In one episode a giant Zoidberg attempted to use a train as nunchucks against a giant Bender. It didn't last.
In another episode, Fry attempt to use a giant nutcracker this way, but ends up hitting his own nose instead.
And in another episode, Fry uses a giant pair of clawcrackers this way prior to a fight against Zoidberg, though he doesn't actually use them in the fight.
In The Super Mario Bros. Super Show, episode "Mario Meets Koop-zilla", a super-sized Mario picks up a train and wields it like nunchucks or a sectioned staff to fight an equally super-sized King Koopa.
In another episode, after learning Plumb Fu, Luigi wields pipe-chucks.
One plot arc in Teenage Mutant Ninja Turtles has the turtles imprisoned by Triceratons in a gladiator training compound. When they're forced to rely on improvised weapons during an attempted prison break, Mikey uses a set of nunchuks made from toilet brushes.