Trowel

A trowel was a tool that could be used for digging.

Queen Victoria used a trowel to dig during the building of the foundations of the Albert Memorial, accidentally damaging a Silurian power line and awakening Vella. (AUDIO: A Photograph to Remember)

River Song used a sonic trowel. After being given a sonic screwdriver by the Twelfth Doctor, (TV: The Husbands of River Song) she alternated between using her trowel and her screwdriver. (AUDIO: The Boundless Sea, I Went to a Marvellous Party, etc.)