Things you have kept for value later on

[Psyber]

Are all of these things stored in your den Psyber?

My "den" is the entire house.

[Lightning McQueen]

After reading Gadj's comment on the new vegemite thread, I thought I might see what other people have put away to see might be valuable one day.
I have a carton of Port Power 2004 Premiership Beer glad-wrapped to see if it will gain any value, at this rate we wont win another one for fifty years so it might be worth something one day.
I remember drinking a carton of Duff beer with a mate and joking about how long they will last on the shelf, who's an idiot now.

what would a carton be worth now??

Around $1000.