This is the sticker that comes in Pyramid Arcade. With a diameter of 3.5", it's a great size to stick on the cover of a little 4" round tin (or other similar container) that can carry up to twelve nests and a one die for travel play. (Or fewer nests and two dice, depending on what you want to play: IceDice would have 10 nests and 2 dice, for example.)

Here's a link to Andy's blog post about discovering the tin: http://new.wunderland.com/2015/10/28/starship-captains-metal-tin/