Lammasteen

The Lammasteen were a race of aliens, who utilised "non-technological" technology.

Appearance
The Lammasteen were humanoid, with green-brown skin and large foreheads. (The Brilliant Book 2011)

Technology
The Lammasteen utilised a unique and arcane form of science; By balancing the resonances of shapes exactly, they could create sophisticated machines out of ordinary objects. (The Brilliant Book 2011)

History
At one point in history, the Lammasteen's homeworld was beset by a terrible plague. They were saved by the Doctor, who was rewarded by the Obligarch of Lammasteen with a toaster, which he initially mistook for a shower unit. (The Brilliant Book 2011)

When the Doctor was stranded on 21st century Earth, he constructed a scanning device out of junk and household utensils, evoking the Lammasteen's devices. When he shared his knowledge with Craig Owens, Craig would then understand its function. There was a picture of a Lammasteen on the wall of Craig's hallway, it is possible but unknown whether the Doctor put it there. (DW: The Lodger)