We have a detachable handheld sprayer in the shower, and Bamf enjoys that. He hasn't played with the sinks very much, so I'm not sure of his opinion there, but I think he would like them, too.
Pixel likes to lick the bottom of the bathtub after someone is done showering... and windows with condensation on them... and the sides of bowls (but not the middles of them) that have water in them.
Pepino loves water, he stares into the sink when I do dishes, and when I turn the shower on he must run in there really quick and check it out
He also loves to drink out of my glass, and play with ice that I throw across the floor, if I can't find Pepino all I have to do is use the ice maker and he comes running