@violet1183 I was seriously considering taping towels or tin foil up and then remembered that we used these in our old apartment. They are not the prettiest things, but they are cheap and easy. I've seen them at Home Depot and walmart also.
I went to jo Anne fabrics and got some black out shade material and I have it tacked over the blinds. I did that with ds1 and now ds2. It looks super ugly but both boys rise with sun and don't nap well unless it is dark in their room.
Re: PSA room darkening
They work great.