Hey Reese ,
Good to see yer still ...
As for signs : as long as anyone can read it , it'll do .
Example : I put a pair of trailer wheels ( tires worn to the wear bars , mounted on nice white spoke rims ) out by the road . I scrawled FREE on a chunk of cardboard and stuck that between the wheels . It wasn't an hour and they , along with the 'sign' , were gone .
But , you might be targeting a little higher part of society , so they might not be able to read . LOL
Pete .