Currently, I keep my developed negatives in my freezer. They're triple-bagged using ziplocs and attached to them are my notes on that particular roll of film. They're still in the plastic sleeves you get when from the minilab. I'm aiming for very long term storage. I want to able to look at my negatives (and positives) twenty years (and more!) from now and still find them in good condition. Anyone have tips for this?