What’s more economical than a pair of vases with the combined volume of a few sheets of paper? From French retailer Merci comes this set of two colorful folding vases, which only take form when filled with water. Essentially PVC bags with vase-shaped openings, they transition from flat shape to 3-dimensional receptacle—and are given stability—with the addition of water; which means, they take up almost no room when not in use, and are unbreakable, to boot.Screen shot 2013-05-04 at 3.31.20 PM

Photos: Merci