Found these asteroids tokens

Part of a finished Kickstarter project (https://www.kickstarter.com/projects/bfrgames/gripmat-get-a-grip-on-your-game/posts/700046 Option 6), but hopefullythey will soon be available alongside their line of VERY nice skid resistent gripmats (http://www.gripmat.com)

The mats for X-Wing comes with many different designs and currently comes as 2 separate18" x 36" mats that you can align side by side so the image on the surface makes a nebula/starfield in 36" x 36" (or 3' x 3') play area