Stashes in a flash.

Leave it to Stojo, maker of the trusty collapsible to-go cup, to take a regular ol’ water bottle and whirl it into something we can tote everywhere. This dynamo’s built from silicone—read: super durable and dishwasher-friendly—and since it drops down to a very-compact size, it packs nice ‘n’ easy. (Did we mention it’s leak-proof, too?)