Thanks for the interesting post. What items would have been uniquely obtainable from the expo and not available through more conventional retailers?

I haven't seen the prepper chow you mentioned or the Crovel(I don't receive the NG channel unfortunately), but I googled around, much to my amusement. As an archeologist/paleontologist, I am a professional dirt mover, and I am always interesting in finding new tools for that purpose with unique capabilities. I think I will pass on the C-tool.