Make a Sign.
Sample signs with your Personal Information are free for the taking, type in your Listing Number and click the "See Sign" button.
Remember, these are samples, you are in no way bound to the layout, modify them as you wish.
We do not offer signs for sale because of the ease with which you can obtain them yourself, any sign shop can produce them for you at a cost of $10-$40 each depending on how you want them and how many you want.
Simply print out the sample and take it with you to the sign shop.
Note: Black lettering on a yellow background is attention grabbing and also is the cheapest because of it's popularity.