Yes! I have a few methods I have done, the simple version is using Kydex.
You can buy a sheet of it, I took a couple piece of PVC tubing as "mold" and a 2x4. I cut the Kydex in a circle, then once it's heated and pliable I laid it on flat surface and formed it the 2x4 then use the PVC tube to shape the "spring". Once cooled down it will make a molded holder, I mounted to the back of the decoy, you can pull the handle and just drop the fan in. I'll draw up a pic and post it back to this.
Black is Kydex, and Red is PVC & 2x4
MK M GOBL