You've certainly got the right idea about the community. I figured that out the hard way by putting my two cents in on a build question. Pete just about bit my head off. I thought everyone was having fun building instruments like we were. Oh well.
As for folky handmade instruments, I have exactly the same idea. I'll post a picture of my uke when I put some finish on it. It was real fun. Although, before another uke, I want to try making a banjo out of a dirty old teapot that I can't boil water in.