Fab Lab is a British television programme designed for pre-school children.
The program features two pixies named "Trixi" and "Dixi" [1] and a dog (male, breed unspecified) called "Prof".
Trixi and Dixi are puppets while Prof is played by a human in a whole-body dog suit.
The shed is used as a laboratory by Prof who investigates various phenomena such as shadows, rainfall or the germination of plants.
He explains features of the physical and natural world to the pixies, sometimes with the aid of a personal computer which Prof uses to show video sequences.