$200?

I spent around $15.
http://www.joann.com/blizzard-fleece...&sz=54&start=1
(Even cheaper now, 50% off sale)

Buy a yard or two. Simply drape over the top. Done. The Taz has a frame already. And when not needed, it folds neatly on a shelf And you can use it as a couch blanket for the kids when not 3D printing. And, folded and rolled, it makes a nice lumbar support for my computer chair while doing the modeling to print.

You can see it hanging over the back in this: