goodbye gift for class?

[ravenfyre.livejournal.com]

okay... so i got a new full time job teaching at a literacy/tutoring centre (yay!)... which means i'm going to have to leave my volunteer job at the elementary school i've been at since september (boo). it's extremely short notice (my last day at the school will be thursday), but i have no choice :\ it really sucks, i wish i had more time.

i'd like to do something nice for the kids (they're in grades 7 and 8), but i don't know what? make them something? i'm looking for any suggestions as to a goodbye gift.
can anyone help me out? i'm at a loss here. i basically have only tonight and tomorrow night to work on it, so all my original ideas (a classroom quilt or something like that) i no longer have enough time to complete.

suggestions, anyone?
much thanks :)