Just FYI, you can pick these up pretty cheap now days. I got a Square Perfect brand (great brand, not so shiny material) for dirt cheap on eBay.
I actually got the 30" cube for under $40 shipped.
I also bought a 60" one...which was too big (rather stupid purchase on my part) for around $100 shipped. I guess I could always use it as temporary housing for MYSELF, should I find the need. lol
Just go to eBay and do a search for "light tent".