The old signs were getting kind of beat up and tagged, so I had these made. Getting them customized wasn't actually that much more expensive than the off-the-shelf signs are... I drew these up in Illustrator, and then had them laser-cut out of plastic by Laser Alliance. (Getting the braille bumps on them was a bit of a hassle, though.)
When I was pointing these out to people the other day, someone said, "It baffles me the things you get excited about."