CREATE ANY FISH YOU WISH.
Surfs up in the bathtub! Fill them up. Pour them out. Watch the water trickle out the tiny holes on their sea creature heads. Mix and match their parts to create new underwater species. Bonus: They're soft and flexible, sort of like real fish. But less stinky.
Rinse thoroughly after each use and place in a location where it can dry completely. Clean with a mild detergent if needed.