I took a poster, attached it to the wall using 3M command strips. I then took some molding, did some 45 degree cuts, and attached the molding so as to frame the poster. Again using command strips. The experimenting is the use of command strips. In theory, they aren’t supposed to destroy things when you detach them, but are strong enough to hold your stuff to a wall. We shall see. At any rate, I am very pleased with the result.