yeah, so anyway...
MTB Tires are cool. And this knobby thing lights up when you drop it. If you're like me, you always have a few extra tires around that you can't possibly throw away, because well, they're so cool. Now you can have a wallet that is as cool as a knobby mountain bike tire. And if you go for the optional drop sensor... If you drop your wallet, the lights fire off like, um i dunno what. some tiny french polizei car inside your wallet your something. You or a person with you is bound to notice and see where your cool wallet went, and if you're in a crowded nightclub or whatever, it lights up every time someone kicks it or steps on it.
Interestingly, the lights also go off if you smack your friend's head with it. You can't beat that for entertainment.
video of the cr-azeee lights:
http://www.youtube.com/v/0MxrhrgJ07o
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Signing UpStep 1: Materials
MTB (large) Inner tube.
Scissors.
Pop-rivets and riveter. Or substitute your favorite fastener method.
Something sharp to puncture with.
A hole punch. Or do without it.








































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http://www.instructables.com/group/toughstuff/
It looks good, and is something I would consider making.
=D
and put rivets (or bolts or thick thread or whatever you choose) all the way thru the metal plate and the tread. that way the wallet gets nice and flattened and has that great mag-closure. i thought about something along these lines originally, but didn't want the weight, and assumed magnets would be too dangerous to keep near mag-striped cards. i haven't played with hard drive magnets, but I know there are some nice flat rectangular neodymiums for sale on line.
The mtb wallet is a pretty challenging design. it definitely gets easier after making one or two that you just assume won't turn out well, just to give yourself a feel for the medium and the particular tire. It's tricky, but I hope you can figure out a design you like.
Another thought is maybe try stitching it together. I thought about using a 'speedy stitching tool' (a sewing awl) rather than rivets. they're super handy:
http://www.acehardware.com/sm-speedy-stitcher-and-reg-sewing-awl-kit-110--pi-1297138.html