craftgrrl | teen guy DIY fashion

I run high school programming for an outreach group targeted towards Asian-American teens in DC, and we're doing DIY fashion one day next week for our summer program. the girls are fairly easy: I'm going to bring in some books on how to embellish/reconstruct t-shirts (without sewing if possible) and also demo some found jewelry stuff.

I'm having some trouble with the guys, however. the emphasis is on budget/DIY, so I'd like this to be salvaged/thrifted stuff if possible. I'm thinking that the best thing might be to make some masculine (surfer-oid) necklaces and bracelets, but I'm struggling with finding any specific examples/tutorials. suggestions?

these boys are 14-18. they wear a lot of Hollister, Fox Head, et al. with a few more "urban" styles thrown in, so I can't talk them into wearing just anything - it has to be something *cool.* I wasn't out of HS *that* long ago, but I'm not coming up with a lot of ideas here. any suggestions and/or tutorials would be much appreciated!