Those cool aluminum 35mm film cans are going for $5 each on ebay! We used to throw them away! Now they're all plastic. So now i'm wondering : should i save my old 120 film spools after putting on the dev reel? Save the 35mm opened film carts? save everything?? 2-How come nobody puts 120 film in a can like 35mm plastic cans? They would be handy if you're in the outdoors, drop in creek,etc.