My vote as well. Inexpensive, portable and collapsible.
A quick Google search brought this up first:
http://www.quiltfrog.com/QuiltDisplayRack.html
Looks easy enough - especially since HD or Lowe's will cut the pipes to size for you.
I've been meaning to build one so I can take pictures of my quilts - straight on, without people's fingers in the corner, balancing off off balconies or porches.
This looks like DH could make it! Seems like I should call ahead to the hardware store, though, to see if they'll cut it. Seems a little ridiculous that they wouldn't, unless they sell them in various sizes...