Jedi Exile's Holocron

This holocron, belonging to the Jedi Exile, was discovered in 29 ABY by Luke Skywalker when he and his wife traveled to the Chiss Ascendancy in hopes of enlisting their aid against the Yuuzhan Vong. The Chiss, who hadn't known the precise nature of the device, but deduced by its age and markings that it was something of possible import, bestowed it upon the Jedi Master as a parting gift.

About halfway through the trip back to the Galactic Alliance, Luke was disappointed to learn that the holocron was simply a storage device for an incredibly massive collection of lesbian pornography.