fade pattern square

On a happy accident, I got in touch with this grand group of people playing board games. I bought a game that contains racing with toy cars on the map in a post apocalyptic world. But it could use an upgrade, as they learned inserts is a thing in their hobby. So, I wanted to make a box, where the cars could be contained. But I wanted some cool way of saving some material. So I was inspired by the checkered finish line and created a pattern in TinkerCad. Feel free to use it as “ negative” to make those boring walls a bit fancier.