Loads of games require you to roll two regular six-sided dice - or, "2d6" in gaming slang - and when you do, not all scores are equally likely. 12s and 2s are rare, while 7s are common. See the graph above.
But remarkably it's possible to exactly recreate that distribution of scores with a 3 sided dice and a 12 sided dice! We call it the Recast 2d6!
Available in black and white.
Price = (the 141st prime number) pence = 811 pence = £8.11