Nearly everything! In fact, the rainbow can be used in so many different ways that it is almost impossible to list all the game variations. The rainbow invites you to play freely and accordingly there is no need for instructions or rules, because they would set limits where there need not be any. However, we do not want to limit your imagination with our products, but rather to inspire it! Free play happens intuitively and out of curiosity and joy of playing and discovering. And because we are convinced of the importance of free play for healthy child development, it has been a matter close to our hearts for more than four decades. But in order to bring free play out into the world and make it accessible to all, we naturally like to nudge your imagination a bit through inspiration. So here are a few of the many, many possibilities of what you can do with the rainbow: Playhouse, Castle, Ball Run, Tower, Balance Game, Sorting, Tunnel, Bridge, Laying Pictures, Car Race Track, Redoubt, Doll's Cradle, Fence, Sculptures, .... For more inspiration on all our products, check out our Instagram @grimmswoodentoys or especially for the rainbow use the hashtag #grimmsrainbow.