I have an idea to start a game at the Smithsonian's "special archives", starting the players with pre-gens of a select team who travel the world retrieving rare and sometimes dangerous items. The team has brought a special "item" in when things go wrong, the players will use the pre-gens to get a feel for how the system works and at a certain point the game will stop. They will make up new characters, who are workers in other parts of the museum, and they will discover that the original team has died and they will have to step up and defeat the evil lurking in the shadows!
So, what I am looking for is ideas for occult items that the team can search for. Is there a book of historical weird items? Any ideas out there?