Bi-fold Closet doors did the trick for me
Here's what I did.
I took two bi-fold closet doors that I wasn't using anymore.
1. I took a 2'x4' piece of plywood and screwed both doors to the edges of the plywood.
2. I put a plastic window above the bottom piece of plywood,
3. then finished out at the top of the window with some more plywood.
4. I then stapled some cheap foam bedding (walmart, 4' x 6' pieces, like $8) to the whole thing, except the window part.
Looks homemade but it works for where i'm at right now...and that's cheapville!
I can carry this thing in and out of the studio room fairly easily and leave it in the garage up against a wall. whenever I use it, I simply back it into a corner and it seems to do the trick fairly well. I also use some blankets on the walls and prop up a box spring covered in blankets right next to it to extend the space inside. I had a guy in there with a music stand, his guitar, the mic stand, a chair, 3 groupies, 2 small mexicans, and some patchouli incense to boot.
well...I may have exaggerated on the mexicans...
All in all I spent maybe $25. I had to be cheap as I could on this one. Hopefully one day I can justify buying a few of those SE Reflexion Filters. Those things look like they rock.
Hope that helps...If the pictures don't show up attached, i'll throw them up to the website for you.
StrangeFamilyMusic.net