I don't know anything about sewing or quilting, but I just know (from my mother) that quilting isn't an easy thing, and takes a long time to do. Mom often scoffs at people that make them at less than minimum wage when they finally factor in the time that they spent making it, and the very low price they sell it at the yearly Christmas bazaar.
I saw this site that sells some pretty good looking quilts that would attract the astronomer crowd. I think if this guy was a vendor at some of the summer star parties, he would do quite well. We do need more vendors up at Table Mountain Star Party, the bad economy has made equipment shopping pretty sad the last few years up there.
Here is a nice sample of the M64 galaxy in a quilt. Forget the Snuggie, I'll curl up under a galaxy while watching a good meteor shower!