I like the game Sagrada. I also like dice towers, and Sagrada needs a dice tower. But dice towers have an attached try, so you throw the dice in the top then pass the whole tower around as people pick the dice they want. It's Clunky. It is an inelegant solution for an elegant game. So I made a dice tower with little hooks on the tray that latched into the tower, but it was not perfect. Then I thought magnets… the rest was easy. Two 6 x 3 round magnets needed to be pressed into the tower and tray make sure the polarity is right.