I actually got back into R/C aircraft in 2008 after a thirty-plus-year absence not because I was interested in the hobby, but because I wanted to pick up on the potential business opportunities available. Little did I realize that everybody else and his idiotic brother had already grabbed all those opportunities up already. Schucks and darn. Oh, well.
Nonetheless, I continue to investigate what I can and hope that some chance at some meager income may present itself. I sure hope so, because I sank a great deal of moolah in researching the R/C stuff over the couple of years. Although I can now produce park jets and sport flyers with very little design or build effort that doesn't help me make any money. Hmph.
Here's what one wall of my personal room looks like:

Plastic insulation foam is the construction material of choice. See my RCGroups page for further details.