Types of windows:
The normal tie in a knot to open curtains methods.
I folded the extra length up and used clothes pins to hold, this made the sheers cover the window so I could walk around in room in privacy.
i carry a beach towel, often the room provides a towel, then I will use the towel to cover sun areas that overheat the room, or when I need a curtain.
This is my hammock, I purchased in Thailand, normally I use as a light blanket for the tropics, however, there are times when I use as a curtain.