John Handley,
I thought the whole idea of a time capsule was to seal it up. I would
include examples of everyday life in a time capsule. It's the little
mundane things that can change the most without anyone really noticing,
unless there is something to compare it with. It's easy to look up major
historical events etc through reference books, but try finding out how much
a hotdog cost in 1954!
George Bailey
Australian War Memorial