Grimm's Rainbow Tunnels

Grimm's Rainbow Tunnels are really versatile: small children stack, sort and build and as the children get older they will use them as a cradle for dolls, as fence for animals, like a tunnel or bridge for vehicles, as house for dwarfs and dollhouse dolls, build amazing sculptures... this Tunnels will always be integrated in playing with a lot of fantasy.
The Rainbow is recommended by "spiel gut" (good toy guide).