Antique Kit from the Surnateum Collection
The most interesting specimen by far is catalogued on a French Website, the Museum of Supernatural History, and contains a pistol allegedly manufactured in the late 1700s at the behest of the Catholic Church for the specific purpose of killing vampires and werewolves. The weapon is of incalculable historic value, if the museum's documentation is to be believed (ahem), having been used in 1888 to dispatch Jack the Ripper, then again in 1945 to finish off none other than Adolf Hitler.
http://urbanlegends.about.com/b/a/040359.htm
(The item has since been removed from the collection.)