Vtech Move and Crawl Ball Educational Infant Baby Interactive Toy 

Tested and works well. 

Move and crawl with the animal friends on the Wiggle and Crawl Ball by VTech. 

This interactive ball wiggles and wobbles on its own encouraging your little one to chase after it!

• Press the animal buttons to hone fine motor skills and learn about animals, colors and numbers through playful songs, phrases and sounds. 
• Flashing lights attract your baby's attention while spinning, twisting and sliding animals encourage interaction. 
• Play and crawl with the moving ball!