I live in Northern Ohio and hit the same gun shows over and over always looking for the odd odds and ends. I don't really shop for firearms anymore as I have most of what I can afford. If I do want a Mil Surp CMPicon North is less than 40 miles away.
We do see a large variety including shotguns, pistols, mil surps from about every country. And a lot of Rack and field grade rifles from the CMP selling for service grade prices. Spam cans of HXP that used to sell for $70 from the CMP go for about double at the shows.

I did find a cartridge belt at a show for $15. Even the repo's are going for $30 or more. I didn't even mind the price being written on the duck with magic marker. It holds 8 M1icon clips or 16 strippers.