Just recently, a Washington state library, in the midst of a rennovation, were removing a corner panel which, lo and behold, revealed a stash of beer and chewing gum from the 1980s. Ironically the panel was from a shelf housing the mystery book section. The stash contained five unopened cans of Hamm's beer and an opened back of Godzilla Heads gum.
Of course they researched the origins and determined that the snack stash is more than 30 years old. The city officials said the "artifacts" were transferred "to another city facility." (the Sudbury Landfill :)
Where's your stash? Or better yet, do you remember where it is and what's in it? :-)