Snatched these from a shop clearance recently, they're kid size bags, but they're clear with pikachu, jigglypuff and wigglytuff on the front, look quite cute to me ^_^ no reason why you can't use them =P though I wouldnt recommend taking them to high school or college...
2 colour schemes here for you, red/blue and purple/green, $5 each, only 2 available and shipping will depend on location.
Anyone itnerested? =D
EDIT: only the red/blue one left!