unintentional? so the plant hermied unintentionally? so, that means they are all trash-dick seeds, fwiw. nobody in their right mind would want those :P
Same way you do any other networking.. find local growers... growers tend to be private about their address and personal information for obvious reasons, which makes it dificult.. so be social.. you'll run into people here from your local area... they'll know people etc.. a slow buildup over time.
a lot of people are greedy fucks. want money for a shitty cutting etc.. end up with bugs and other problems from their "organic" garden, lol. trading seeds is much safer. be very careful when trading clones... in my experience you just get a pest infection for your efforts. isolate and quarantine any clone received for 2-3 weeks. Same goes for the person you gave one to... you too will pass something along if you do it enough. Irrational people will have irrational responses, lol...