You can also try a color printer and adhesive laser-friendly sheets that claim to be weatherproof. Ours are looking a bit haggard five years later after printin

You can also try a color printer and adhesive laser-friendly sheets that claim to be weatherproof. Ours are looking a bit haggard five years later after printing them, but we haven't been issued any tickets. I'm sure they're not legal, but nobody seems to mind.