In the UK we have draft snakes, these are useful for blocking light to but help keep air flow. Comes in useful for breathing does air.

They also block noise in Vanillas house!

http://www.goodhousekeeping.com/home/crafts/door-draft-stoppers-draft-snakes-460109

They are easy to make and can be super cute.

Vanilla

Freedom is just another word for nothing left to loose.
V 64, WAW