As hobbies go, the knife hobby is pretty affordable. My brother got into Lionel trains. He probably still is but his house burnt down and all the trains, guns, and everything else went up in smoke. I don't know if he got back into the Lionel train thing. I even bought him a few cars to add to his layout. My older brother has turned into a "bird watcher" and has made a great deal of effort over a fairly large area to look for and photograph birds. I envy his pictures. The ones I see are really good. Photography to me is a hobby, a serious one, but still a hobby.