Food, water, and ammunition?
My biggest collection item (both in money and size) is vintage stereo gear. Receivers / amps / speakers.
Cool. I just picked up my Onkyo Integra A-8076 from the shop. Going to fire it up tonight and watch
The Last Waltz. Also have a Hitachi SR-84, some vintage Klipsch, 2 pairs of Scott S-15.