The SECRET Warehouse from Indiana Jones with contents

I use a similar concept in a role playing game. This was a HUGE list and hard to pare down to 1000 characters and have to skip some hilarious items like:
Two strange electronic devices, found with a set of identifcation for
“Commander Pavel Chekov, Starfleet.”

A heave metal box, 75cm on a side, painted in military green. Each side
has the words, “This side towards enemy” printed on it.
(Nuclear claymore mine)

The “magic gun” that fired the “magic bullet” that killed JFK

A large stone tablet, reconstructed from pieces, with writing on it. It
is Hebrew and has Commandments 11 through 17

Microscope slide labelled “Turin Shroud section No. 325″, with piece
of material reading “Made In Korea” in tiny letters

Snake Plisken’s death certificate

A searchlight with the sillouette of a bat on it

and

Universal Solvent (we think) (bring your own container) (hurry) (never mind…)

A great and funny list