A simple way to block light from a window is to place a material such as aluminum foil or a piece of plastic wrap over the window glass.

A screen, a piece of glass, or a clear plastic film can be put on the window to block light.

One way to block out light from a bedroom window is to install a blackout curtain.

You can block light at night by using a security light cover or a security light.

There are a few ways to make your room pitch black during the day. One way is to put a black curtain over the window. Another way is to use a black lightbulb.

There are a few ways to make your room dark without curtains. One way is to use a lightbulb. Another way is to use a fan or an air conditioner.

There are a few things you can put on your windows to keep people from seeing in at night. One option is to put up blackout curtains. Another option is to put up a light shield.

There are a few ways to stop light reflection in windows. One way is to put a screen between the glass and the window panes. Another way is to use a screen door.

There are a few ways to block neighbors’ bright lights. One way is to install a light shield. Another way is to place a blind or curtains in front of the windows.

There are a few ways to darken a room to sleep. One way is to use an app like Blacklight or a light bulb with adjustable light intensity. Another way is to use a room darkener.

One way to stop light from coming into your room is to use a curtain rod to close the space between the window and the curtain.

There is no material that absorbs 100 of light.

Some materials cannot absorb light, such as glass and plastic.

A window is a great place to use curtains.

One way to make a dark room feel like it has natural light is to add light fixtures that are different colors. For example, you could add a green light fixture and a blue light fixture to create an effect of adding light from both directions.