Curtains from Tea Bags

Various Beaker Folk, inspired by the idea of making curtains from tea bags, have decided that's their project for the new year.
Sadly there have been problems already.  Mostly because, being the environmentally-concerned types that they are, various attempts have been made to use used tea-bags.  Not very nice at all, and much heavier than the unused originals.  There was a real problem when Burton Dasset's curtain leaked through the floor and into the room of Stacey Bushes, who lives below.  Stacey, who's quite an imaginative young woman, thought at first it was blood and ran down the corridor screaming.  Seeing she was quite hysterical, a fair queue formed of people who'd been looking for an excuse to slap her.
Meanwhile people have also been trying to make curtains from circular tea bags.  Although they look quite pretty, they do let a lot of light in as well.  While the pyramidal tea bags are really better for more 3-dimensional effects.
The coffee bags are pretty good as well, but they do have the unfortunate side-effect that you can't sleep at night.