Well, I feel like a slacker.
English octogenarian Cyril Barbier has spent 30 years (!) building a beautiful scale model of a 1930s movie theater, including an LCD screen to play movies.
For some time I've considered building a 1/12 model of a particular theater lobby (it's one of those tiny, old theaters that are in perpetual danger of closing). Having seen pictures of Barbier's work, I know it'll be a challenge for someone like me, with limited practical skills, to do that.
But, I might still try. (After the dollhouse is built, that is.)