What to give teenage boys as a ';congratulations gift'; after a performance?

My mom is a teacher and is having a ';performance'; tomorrow. she is getting the girls carnations...but what to give the boys? Can someone give me an idea of a cheap but really cool gift to get a bunch of guys? Thanks!What to give teenage boys as a ';congratulations gift'; after a performance?
Money , all teenagers want money.What to give teenage boys as a ';congratulations gift'; after a performance?
Oral?
what kind of performance is it?
A nice book mark. Granted the boys ( depending on their ages now) may not appreciate but down the road they will pick it up and recall the day.
candy?
A paper certificate of achievement. Approx .35 cents ea.
a book that will teach them how to live a successful life

medication cream

pink blush