Blinds for the blind

I've finally ordered some shades for the kitchen windows. We have windows on three sides, reaching all the way to the ceiling and some are South facing. It's so bright in the Spring and Autumn that we wear sunglasses in there. These aren't exactly light-blocking, more like light-filtering but they were a good price and, given that we either want to sell or renovate, I don't really want to spend any money on the house. Now I have to install them...