Bumpy play ball = Mama's foot massager
The balls with bumps that all the kids have make great foot massagers.
I'm thinking a little foot massage while you're kid's playing in the bathtub, or while you're watching TV, or while you're helping with homework...
What's your tiny take-care-of-yourself treat? Mine: an afternoon cup of coffee with half & half.
Related: Spa-ing on the cheap