Laptop

Laptops were personal computers used on Earth.

The Xylok later known as Mr Smith first communicated with Sarah Jane Smith using her laptop. (TV: The Lost Boy)

The Eye-5 lens could be connected to a laptop computer. (TV: Children of Earth: Day Four, Dead of Night)

The SerfBoard was a type of laptop computer. (TV: The Man Who Never Was)

Jeff Angelo had a laptop which the Eleventh Doctor used to hack in on a conference call between some of the most advanced scientific minds in the world in an effort to spread a computer virus to show the Atraxi where Prisoner Zero was and therefore save the Earth from incineration. (TV: The Eleventh Hour)

Clara Oswald had a laptop which the Eleventh Doctor used to reverse her upload by the Great Intelligence. Clara later used it to find out where Miss Kizlet's organisation was based, and the Doctor controlled a Spoonhead with it to confront Miss Kizlet and force her to restore everyone trapped in the data cloud. (TV: The Bells of Saint John)