Assembly Ball Run(Grimms Assembly Ball Run)

This elegant ball run invites children to slow down, focus, and build something truly special. With 80 colorful wooden panels and 176 dowels, the Double Spiral Ball Run twists into two graceful spirals that guide marbles—or the four included bells—on a gentle, musical descent.

As the marbles roll and clatter their way down, kids will delight in the movement, sound, and rhythm of the run they’ve built themselves. It’s a hands-on project that rewards patience and care, encouraging spatial thinking, fine motor skills, and creative expression.

Arrange the colors into stripes, gradients, or your own unique design—the possibilities are as open as a child’s imagination.

A beautiful blend of construction, motion, and sound, the Double Spiral Ball Run is a joy to build and a wonder to watch.