A ring with a spinning centre that centre functions like a die. Ideal for games such as Dungeons & Dragons. And - of course - if you only need to roll between smaller numbers you can work out your own system. I'm yet to put an indicator on the ring (to show the result) or put the markings on the ring (the icosohedron will symbolize 20), but I've got the font down and simplified for etching and a cut-away version to show how parts connect. And I'm planning to make the colours alternate between black and the metal so it can function as a coin flip.