I'm not OP but speaking solely for myself, Minecraft has really turned me back on to all the logic design stuff. For example, see my single-push-button castle gate control, http://imgur.com/a/tBzJh. Of course, Minecraft physics aren't the same as real physics, but I think this is a great way to introduce anyone to circuits. It's certainly a lot more fun than the various exercises I had to do in my college EE classes.