for the six characters dealio: Lemony, Kellar, Moxie, Ellington, Jake, Cleo!
Give a CapriSun and lay down for a nap: I want to say all of them but I’m going to go with Kellar Haines.
Enlist to help build a pillow fort: Jake Hix, no question. He’d be the sort of person who draws up blueprints for it. Jake does not joke around with pillow forts.
Slingshot into the deep recesses of space: I love Cleo Knight but also she’s the only one who would probably survive this so. Cleo Knight. (Plus, think of all the exciting science she could do there.)
Sing bad karaoke and play DDR at 3am with: I’m gonna say Moxie Mallahan because I feel like her DDR skills would be just as poor as mine, so we’d make a good team.
Smack with a rolled up newspaper: LEMONY FREAKING SNICKET. Stop murdering people, Lemony.
Let borrow the aux chord on a road trip: Ellington “my music taste is more sophisticated than yours Mr. Snicket” Feint.