A good example is this Boba Fett Rocket backpack which might look cute to a geeky parent, but is probably going to make junior the No. 1 target of the 6th grade skater kids if he ever dares to wear it to school. Threatening to throw the bullies into a sarlacc pit probably won't help to diffuse the situation much.
I would probably set this one aside for Halloween, although at a wallet busting $50, it makes for a pretty expensive costume. (Admittedly awesome) helmet not included.