I can have a sign made for my car, but wouldn't do much good. 95% of the week my car never leaves the garage. We have a sign right out at the stand, but that is the only one that's legal. We tried just putting a sign up for the weekend that said just SALE with an arrow pointing our way. Put it out Friday night, took down on Sunday. The same as anyone can for a garage sale. Guy took the sign down & didn't give it back. He left a message on our answering machine telling us that "I'm sure you don't want me snooping around looking for violations, do you?"