Towel blinds

Looking for a way to brighten up your room? Want to send a message to people outside? Or just need your blinds to be darker because there are lights on outside your window all night?

Using a beach towel, some binder clips, and some removable wall mount hooks, I mounted a towel in my window to block all the unwanted lights of the city. I mounted three hooks at the top of the window; two in the corners and one in the middle. Then I took three binder clips and clipped them to the towel in similar locations. The loops of the binder clips can hang from the hooks. Now the towel is fully suspended.

But how to roll up the blinds? If you don't mind only being able to roll them up halfway, then use two more binder clips to attach the bottom of the towel to the metal bottom of the blinds. Now when you pull up on the blind string, it will lift up the bottom of the towel too. When it's up as high as it will go, the towel will still drape down to the midline of the window.