Target Dollar spot has some stationary with initials (if you have names) and other silly things like slinkies that teens might not mind getting for fun...
Michael's has some stuff in their various "spots" by the registers and on end caps. Often on sale for pennies on the dollar.
Nail polish
sorry--can't think of much else as I am a girl.
My kids are still young, but we put in tooth care stuff--new spin brush.
Hair accessories (If you have H+M, you can get some really inexpensively--also good for funky jewelry)
My son gets hot wheels cars.
Don't forget CANDY!
Target has some very cute Lindt chocolates that are holiday themed (angels, santa's sleigh, snow men, etc...)
Check the cheap DVD's. I found some that I thought folks would enjoy from the Black Friday deals. They probably have run out by now--but I do know
Walmart has their $5 bin on a regular basis and you might find some fun movies that a teen would like.
Wish I could help more on the guys. I just dunno and my guy is still in pre-school. He's going to love his Cars-themed boy-squinkies.
