The dipping drinking bird is a scientific wonder, with his repetitive drinking motion. Just set a cup of water at the right level in front of him, and he’ll drink until the water level evaporates.
A repetitive and calming toy as well as a learning opportunity!
https://drive.google.com/file/d/1UqWa1g-HMFXngFbAYagWlsA1Nmh9HrGO/view?usp=sharing