Homozillian eyedrop

A Homozillian eyedrop was a clever piece of alien technology that was capable of adjusting its size to fit the wearer. It was capable of detecting and scanning for alien life forms. One was used by the Homozillians to infiltrate the world of Kestraleve and drive out all the aliens leaving the planet ripe for plundering after controlling its trading power and ruining its market structure. (COMIC: Eye Spy)

Behind the scenes
The Homozillian eyedrop was the winning design by reader Gregor Stanley in a design a gadget competition in Doctor Who Adventures.