My wife Nikonya bought this cool Ankway solar powered bird bath water fountain from Amazon. Here’s the link:
It performs really well, but you have to limit the area where it floats with rocks or other device to keep it from floating to a side and pumping the water out of the birdbath. We like it a lot though. It really shows just how much power the sun provides to throw that water up 14 to 16 inches in the air!