Starting a mail club

Is this weird ? Has anyone tried to do this
I’m apart of like 3 mail clubs because I love getting mail idk if this is weird and I’ve lowkey always wanted to start a mail club since I was into that artist alley space but never have gotten to sell things, like little prints or postcards, it would probs be extremely niche like mahou shoujo, precure, gl idk or just like historic art with a twist I’ve also seen one with receipes with some things thrown in too, like fun cutesy stuff with rainbows lol

, i think the biggest issue would just be getting money for stamps because why tf is it 66cents per stamp
I’m not looking to make money or anything from this