Made by Londji, a Spanish company. www.londji.com. This is what the advertising has to say about it: ‘So, how do the Martians see? From your spaceship, standing between the kitchen and the living room, you can gaze on outer space with the magnificent Space Eye. A lens that converts reality into small poetic fragments!’

The tube is designed to look like a tube of vitamins and is labelled ‘Optical Vitamins’. It is one of a series of kaleidoscopes made by Londji, a Spanish company. www.londji.com.