A smart new tool for growing plant cuttings, the rootcup is molded from a flexible elastomer that’s UV-resistant, nonporous, and waterproof. Simply add water and a plant cutting, and the piece’s flexible lid will protect the roots from light, capture evaporating moisture, and hold the cutting’s leaves above the water. When it’s time to plant, the cup has a slot to help you remove the cuttings. Designed by Michael Good, the piece is so simple that even the most half-assed of would-be urban gardeners (you know who you are) will be able to join in the fun.