The Doctor's toolbag

The Doctor's toolbag contained a sonic screwdriver, sonic screwdriver-like tools, at least three fob watches, a set of keys, the Magnetic Clamp, and a neutron ram. (TV: Doctor Who)

In a dream the Eighth Doctor once had, the bag was dimensionally transcendental. This fact allowed he and John and Gillian to capture Wargonn, and thereby return imagination to the planet of Darbodia. (COMIC: The Land of Happy Endings)

It was also used in the Doctor's eleventh incarnation, when he gave Rory a pair of glasses (TV: The Girl Who Waited)