Talk about wash and wear! This thoroughly waterproof and easy-to-make Water Purse drawstring purse, crafted from an onion bag, is more than just a fashion statement. Secured to your clothing with a plastic clip, it's invaluable for carrying quarters for the pool's soda machine, holding interesting river rocks or hauling your goggles and earplugs to the beach.
Weave a length of plastic twine (or other waterproof material) around the onion bag's opening to serve as a drawstring.
About halfway around the bag, weave the twine through the loop of a plastic clip, like the kind commonly sold as key chains.