I've found a few, mostly around old house sites, Colonial. Lot's of better relics elude me :>), but I take what I can get and am very happy finding anything old these days!
Or getting permission which I have on some new spots lately. been doing goodwill property marker searches and the word is spreading. People get to know you through friends and see if they want you around. I'm not greedy either. I am completely honest with all finds no matter how much it hurts sometimes :>) and I have been richly rewarded and get to keep most of my stuff as wealthy folks with land see it as a bunch of dirty stuff they don't want or know the value of, but of course I open my big mouth and they still let me keep it. Just don't have the passion we do.