While I normally use my Nikon FM2n if I'm shooting 35mm, lately I've been using my 40-year old Olympus OM-1. It's paired with a versatile 50mm Zuiko f1.8 lens and is a bit smaller than the Nikon. I love that this camera served my father-in-law for dozens of years, then Kate during high school photography classes, and is now working like a champ for me. I'm not sure how how many digital cameras we use today will still be around in 40 years. Probably none. This past weekend I loaded the OM-1 with Kodak Portra 400 for our random exploring.
Virginia Slims Poster, Prospect Heights, Kodak Portra 400