Dave Stdider Pokemon Traner actually has a chapter called "Team Bad Goes Shopping in which Team Bad's Jack and Karkat end up going to the mall and fighting Jake England over a laser weapon they find in the "Evil Section". The kicker? None of them actually had enough money to afford it in the first place.
Naomi: Whatever. Try not to get any blood on the carpet.
In the Crack FicA Charmed Life after Kira disappears L is all worked up trying to find him, wondering what nefarious game he could possibly be playing with him now. Light in fact has taken up apple farming.
Queen Of All Oni: Jade is often shown doing various non-villainous things when she's not busy fighting for the masks and tablets, such as video games and (on Halloween, obviously) trick-or-treating. She's also shown to take advantage of new developments for fun, such as pitting her tribe of Shadowkhan against Ratso's in a baseball game, or using her new contortionist skills to cheat at bets with the Enforcers. Hell, she'll sometimes even find ways to have fun during her schemes, like the time she and the Enforcers raided a food stand at an amusement park she was attacking.
Nights Favored Child: Nightmare Moon and The Inquisitor are shown in several scenes simply relaxing, usually over a nice cup of tea. The Inquisitor has also been shown to have a number of hobbies, including listening to music and reading.
A Running Gag in the Dark World Series is someone wondering what Discord's doing or he'll be back soon... only for it to cut to him having a night out with Fluttercruel with a surprising lack of torture and maiming. The two instances that most fit this trope are cutting to him and her playing video games at an arcade and them skiing. All in all, he only does one genuinely evil thing the entire time.
"Nightmare House". It takes place before (or possibly during) the main Dark World story and depicts Nightmare Eclipse/Paradox and her Psycho Rangers merely talking at their house between Paradox's interventions in Dark World. They simply hang out. Though it's a somewhat dark in that the focus is more or less on them trying to play the part of their old lives but being unable to due to what they've become.
In one chapter of Shadowchasers Power Primordial, the Paragons pass the time playing poker; Menzoberra wins, causing Rary to comment that wearing veils shouldn't be allowed in games where bluffs are used.