"Tub toys" refers to toys that are specifically designed to be played with in the bathtub.
Sentences with «tub toys»
During the summer months, this bath tub toy also doubles as a pool toy. (thetoddle.com)
I spend my mornings writing the memoir and my afternoons running all over town buying tub toys and cloth diapers and malaria medication. (thenextfamily.com)
As a bonus, it also keeps tub toys close! (momtricks.com)