Wow, that's actually a really good idea. It looks nice too.
That ceiling is pretty low--and the desk flange works perfect for that. If you have higher ceilings, the desk flange and goose-neck/booms won't work as well, I don't think--at least it didn't work for me. I just found an alternative, allowing me to mount the actual mike stand to the ceiling. I went to Lowe's (Home Depot would have it, too) and in plumbing I found a floor flange -- 3/4". Mind you, it doesn't match the threads, so you can't screw it in. But what I found was that you can stick the stand right through the opening, then take the hand-nut (most mike stands have a washer-like hand-nut that tightens against the top of the base) and screw it on, allowing it to hang from the flange. Of course, there is a chance through time that the hand-nut could loosen and things could fall on your head, but I managed to tighten the darn things by turning the stands once they were mounted.
As you can see from the pictures, it's pretty handy. My room is small - 8' x 10', so having these suckers hanging from the ceiling really is nice. The ShinyBox is now able to mike the amps, or even come down and mike an acoustic while I'm sitting in a chair. The C1 I've got hanging down to record a snare and hi-hat and anything else I want in "that" corner. I like the idea so much, that I replaced the cheap table mike arm I got on ebay with the set-up for my CS5 on my "console" table for stand-up vocals. You'll note to the right of of the CS5 is another ceiling mount stand which will be for my new ACM900 tube ribbon that arrives...on Wednesday! It's kind of hard to tell, but just to the left of
the CS5, and down, I used one of the Radio Shack desk flanges to side-mount a pair of Cascade M39's from the front of my "console" table for sit-down stereo miking of acoustic instruments.
I should add that I was lucky in that this rooom, which had been part of our garage, had been "remodeled" at one point in the 70's which included the rather intricate weaving of those 1x3"s, which made it easy for me to mount to the "ceiling."