A collapsible water bottle is a smart, space-saving idea and the 25-ounce Origami Bottle from DiFold nails the concept. When the bottle is empty, a simple twist compresses the 8-inch tall vessel to just 2-inches to easily fit in to a pack, pocket, purse, or bag. The body of the bottle is made of a BPA-free thermoplastic elastomer that is odorless, tasteless and recyclable. A funded Indiegogo.