One of kiddo's favorite presents was this popper, provided by her aunt. You push the red plunger, then little plastic balls come flying out of it, accompanied by loud uptempo music. Kiddo likes the balls, but is content when they've all scattered across the room. What she cannot live without is the musical accompaniment. Have music, will wiggle her little bottom for a good dance.
She will be thrilled when it shows up in the mail; it will be like Christmas all over again.