I have a vinyl cutting machine, and could cut out some simple Lateral-g.net stickers.
Mine just cuts vinyl, it doesn't print color, or anything fancy. I could do different colors, but if it's going on a window, white shows up the best.
I made some pt.com stickers two years ago before the power tour, and just left a stack on my front seat for anyone who wanted one. I've also mailed some out to a few people that sent me a sase.
So I could do that again, if needed.