Saw an ad in the new issue of Entertainment Weekly about a bracelet worn by Tony Stark in the new Avengers movie. It's a cool looking prop replica. Thought you guys would be interested. Here's a link to the company's website.
TRION:Z - IONIC GEAR FOR ACTIVE LIFESTYLES
Apparently the bracelet has two magnets which are supposed to stimulate your muscle movement in some beneficiary fashion. The Japanese seem to think there's something to do. Seems a little weird to me. You have to hunt a bit to find any info about the supposed medical benefits. But it's a movie prop replica now. So, enjoy!