Give your brain a little workout next time you’re chowing down on a big plate of pasta with these placemats from MoMA Design Store. The Trick Placemat looks like a 3-D grid when you place your fork, knife, and plate on it, with your dinnerware adding some perceived weight. Available in either blue with white lines, or white with blue lines, the Trick Placemat is ready to mess with guests at your next dinner party. They’re available direct from the MoMA Design Store and are made in Japan. Pick up a set now and give your noggin a little burn.