Thanks for the pointers! Your 3rd example is the one I bought, but it is clear, so doesn't show up on a black laptop. They don't seem to have a non-clear vers

Thanks for the pointers! Your 3rd example is the one I bought, but it is clear, so doesn't show up on a black laptop. They don't seem to have a non-clear version of that one. The non-clear ones they do have are just the spiral, without the word "debian", which seems a little vague for evangelical purposes. One of these days, I may have to learn how to get stickers made.