Fat Brain Toys | Plip KitPlip flips the script on creative construction! Create swirling patterns, complex prisms, architectural sculptures the connections hold together strong, and when you pull them apart, they make the most satisfying "POP!" This collection of 46 silicone arches, sticks, and Xs connect via ball and socket ends to build an endless variety of artful structures. With the Plip Kit, you're not just building, you're exploring. Plip Kit Silicone ball and socket