ABC party help

[AlphaDeltaDelta]

I'm the new social chair of my fraternity, and this Thursday is the first party I'm throwing. The theme is Anything But Clothes, but my fraternity is an eclectic bunch, and some didn't like the theme because they couldn't think of anything good/unique to wear. I'm compiling a list of costumes for the party, but any you think would be good for guys that I haven't listed would help.

bubble wrap, beer cases, bed sheet (toga), duct tape, wrapping paper, trash bag

I've been to ABC parties before and I've seen other good costumes, but the ones I need to list for the guys who couldn't think up ideas on their own obviously need to be a bit more modest than the average costume. Any easy, good ideas would be very helpful.