Alicia: Probably the ability to read minds. intrusive I know, but she's bad at asking questions because she doesn't want to upset or anger people (also she's got pretty severe anxiety) and her sweetheart just refuses to express his feelings.
Kattar: Probably flight or telekenises (i can't spell), just because it would make life a whole lot easier as he's still getting used to be paralyzed. (he'd probably still ask Alicia to do stuff for him tho, because if she never turned her back on him he wouldn't be able to snatch her sash)
Jinho: The power to multiply, because you just can't get good help these days.
Andrew: Is actually pretty content, but it would be cool to fly or have super speed. Maybe super strength, it would make dealing with lumber a little easier.
Eliza: telekenises, just because she's extra like that.
Aaron: A super memory, it would help him be able to keep all the thinks he's trying to deal with organized. And that is a LOT thanks to somebody...
Ruby: invisibility, for obvious reasons (to avoid Eliza)
Lucy: The power to convince Eliza that she's NOT A SPY