Queer tartan is made up of flat, digitally-created 3D crystal shapes called Tassays (named after the gems you sometimes find on the end of fountain pens and an old Scottish word for drinking glass).
Each Tassay is completely individual. The tartan that is wrapped around the Tassays is why this is called Queer Tartan.
Sets of Tassays are made for each brand or individual. They come in a Zip file of PNGs so they are easy to use. They can be used individually as graphics for badges or pins, on websites, on brochures or on merchandise. Or they can be grouped together to form pictures or letters.
As you can see on the right, the Tassays work well together even though each one is very different. I think this is a nice metaphor for diversity too.