My bed

[leahseraph.livejournal.com]

I have a bunkbed. This enables me to have floorspace in my room and a couch underneath it, which is great. The bed is in a corner, about six feet down from the ceiling. I'd like to put up curtains or something to isolate my sleep space from the rest of the room (and possibly insulate in the winter as well; my heat sucks). Does anyone have any idea of how to do this? Preferably cheaply?