I bought these plastic frames that clip onto the window of a car and advertise for you.
The Question is.. Who could use this? I need ideas!
In this picture the sign blank is about 12″ x 16″. It could be wider but not much taller. I would not recommend using this while driving at break neck speeds… like maybe a parade? (Idea #1)
It uses coroplast only but it could be shaped not square.