The Tardis Dice Tower was created for some friends, who love both Doctor Who and tabletop games. The top is designed to come off or be glued in place, while the cap is removable to allow dice to be dropped in. There are three "steps" inside the Tardis, that the dice roll down, and at the bottom they bounce off the open door onto your table. It actually works really well! (just be warned, they come out pretty fast!). If anyone is interested, you are free to download the STL's and print for yourself, just visit: www.walkerstudioworks.com