I was checking out at the pet store, and in the impulse bin by the register, I saw them--small, squeeky, playground style balls. Great for an infant at the low price of 99cents!
Ethan really likes them! They are small enough to be easy for him to handle. Unlike some of his other balls, they bounce when he throws them. And did I mention that they squeak?! Bonus!
Lesson for the day: Keep your eyes open and imaginations ready!