Vertical blinds
Horizontal blinds
Voiles
Roller blinds
You can get a one way plastic that you stick to the window and you can see out but no one can see in.
Have you considered using a bedding quilt? Some folks use quilts to cover their windows.
Go to the dollar stores. Put nice stickers there. Try and make it look inviting.
Wear an eye mask.
IF you have rods over the window, hang your clothes.
blinds