Need some creative ideas...gift for teens...

Our volunteer group is hosting an Art Expo for local elementary school students. The judges are seniors from the Performing Arts High School to give them experience with judging art competitions. We have 12 teens coming and would like to give them a little thank you gift. Last year we did stadium cups filled with pens and candy...so that tells you how much we have to spend...not much.

Any ideas for something cool, but inexpensive?

how about a $5 GC each for Starbucks? too much money?

What about altering a little notebook and pen for a cute set?

I have two teenagers and they love movie tickets, blockbuster gift cards, starbucks gift cards. Also since they go through alot of school supplies and have to buy alot of their own books (or rather their parents have to buy them) a small gift card to an office supply place or a bookstore like Barnes and Noble. My husband and I have had to buy five books for my daughter so far this year that range from 5 to 20 dollars a piece and the year is only halfway through so a Barnes and Noble gift card is a great idea for older teenagers