PowerTRC Perpetual Motion Drinking Bird

PowerTRC Perpetual Motion Sippy Dripping Drinking Bird (3 Packs) Original Vintage Retro Science Birds

Juvale Newton's Cradle Balance Pendulum, Physics Learning Desk Toy, Swinging Kinetic Balls for Home, Office Decoration, Stress Relief, Fun Science Fidget Accessories (7x6x7 in)