Use Velcro and a towel
I use a towel of the appropriate size for the window, or cut to size and bind the edge and Velcro at the corners. Put the looped (soft) pieces of velcro on the wall where the edges of the towel will touch and the hooked velcro on the towel. If the window is wide add a couple pieces toward the middle. If the top pieces of velcro are slightly longer down the towel than needed you can roll the towel up into a tube and reattach the rolled towel to the wall. If I want some light through a window I just use a thin white dish towel. In an emergency the towels can be used to dry dishes or hands. :^) This way I don't have to drill any new holes, the velcro can be peeled off if I no longer want it and I can change the color and pattern of shade by buying new towels. When it's cool outside a thick terrycloth towel provides added insulation at the windows and prevents condensation. They don't rattle and can be folded and stored anywhere. Works for me. Brigg
