The bike industry offers heaps of folding stuff. Folding multi-tools, folding tyres even folding bikes. And why stop there? How about a folding helmet. Stash Kit offers a commuter helmet with collapsable sides that reduces the space a helmet takes up. Although not very heavy bike helmets are bulky and people either have to attach them to the bike, where they're easily stolen, or carry them. The Stash Kit helmet folds to a size that can be put in a laptop bag or has it's own little drawstring bag.
Reinventing the wheel
What's next Folding Wheels? Yup! You got it... some bright spark has come up with a pretty cool way to fold bicycle wheels. Again the application is aimed at commuters and travelers.