Like all of Grimms other products the play possibilities are endless for the 12 Piece Natural Tunnel. Toddlers will love to stack it high then knock it down. As your children get older they will create more unique structures, testing out gravity and balance. They can also turn it into a farm or a zoo, a cradle or a tunnel. The list of creations for Grimms, is endless! Children and adults alike fall for the Grimms and their beauty.