Unbound Doctor's sonic screwdriver
From Tardis Wiki, the free Doctor Who reference
A sonic screwdriver was found by Bernice Summerfield at the Gateway Emporium.
History
Bernice Summerfield found the screwdriver while visiting the Emporium. She didn’t recognize the model but knew that her Doctor would. Later, the Doctor would see the screwdriver and knew what it was. (AUDIO: The Emporium at the End)