No holes in the wall allowed at many colleges/universities. Here's a clever way to decorate and display photos without incurring damage fees. Wires stuck to the walls with small Command Hooks - bows entirely optional.
We have an older home ('25) with picture rail molding and plaster walls (you can't put nails in the walls). We have to hang things just like in this picture with picture rail hooks. I just ordered our hooks today! Little Green Notebook: Picture rails.