Prime ONLY: Melissa & Doug Deluxe Pound and Roll Wooden Tower Toy With Hammer $7.63 + fs @amazon

https://www.amazon.com/dp/B000VO3GME
Features:
Pound the four balls through the holes and watch them roll down the ramps
Brightly colored, smooth-sanded pieces help build early shape, color, and size differentiation skills
Sturdy wood construction
Exceptional quality and value
Ages 2 years and up