I just bought a couple of hollow-core doors at a local salvage shop which should make great bases for pink foam. They are fairly lightweight, very rigid, and cost $5 each, since they were slightly damaged. And the damage is right where I'm going to glue the pink foam!
I was also looking at an old bulletin board, which has a nice wood frame.
manager
I was also looking at an old bulletin board, which has a nice wood frame.
manager