Get a folder with a rangefinder built in--- even an uncoupled rangefinder is a lot of fun. Look into the view hole and figure distance with the mechanism then set that distance on the lens--

Try an Agfa Isolette for 6x6 or something like an Agfa Billy Record for 6x9. I have both, and consider them by far my best cameras. (Both also sport a timer on the shutter for getting into some of those pictures.)