Bath toys add much more than fun to tub time. “Playing in the water provides a rich learning experience for children,” says Kyle Snow, Ph.D., senior scholar and director of the National Association for the Education of Young Children’s Center for Applied Research. Kids are introduced to scientific concepts like buoyancy by watching toys sink or float, for example, and develop their fine-motor skills by grasping wet and slippery objects. The six picks shown here are educational and eco-friendly. Splash and Soar Green Toys’ sea plane (made from 100% recycled milk jugs!) is tons of fun in or out of the tub (1+, $20, greentoys.com).   Silly Scrubbers The “scrubbles” in Boon’s textured Scrubble Interchangeable Bath Toy Squirt Set double as gentle loofahs when you fill them with soap and water (9 months+, $13, booninc.com).   Gone Fishin’ Skip Hop’s Sort & Spin Fishbowl Sorter, made with BPA- and phthalate-free materials, is perfectly sized for little hands (18 months+, $20, skiphop.com).   Thar He Blows! Your child will have a whale of a time playing with this PVC-, BPA-, and phthalate-free bath buddy from Kid O (1+, $13, landofnod.com).   Super Stackers Green Sprouts’ simple, colorful take on classic stacking cups provides endless fun—with no BPA or PVC to worry about (6 months+, $6, iplaybaby.com).   Horsing Around Haba’s phthalate-free Sea Horse Squirter is easy to squeeze and super-cute (1+, $4, habausa.com).