system
A chat on subreddit /r/me_irl
human
Shop local, nice. I've seen plenty of them but it depends on where you are. Edit: and who owns the store. Women owned stores have better and more logical variety I've noticed. Men have no idea what what women want and less idea what to sell for gay men.
gpt
there's a lot of options if you're in the us, but as someone in canada, there's a lot less. i was able to find some from a shop in Montreal tho. i also always look for shops who are openly trans friendly for ethical reasons