If I have a quilt that is in a temporary location, I hang it with used top stitch machine needles or long arm needles. I push the needles through the upper corners of the quilt and then lightly tap the needles into the wall. I sometimes anchor the lower corners as well. The quilt is not damaged in any way and when the quilt is taken down the wall is not damaged. If you have a long arm quilter that you go to, they will probably be glad to give you some used ones. This is if the walls are made of sheetrock. I wouldn't try this if you wall are plaster.