These retro Robot Baubles from Habitat will bring a of 50s sci fi flurry to your Christmas tree. The three mechanical men stand at an impressive 11cm high and and come in a range of suitably space age yet festive shades. Of course, in their natural habitat the traditional tree would be made of stainless steel but we'll let that slide.
The pack of 3 Robot Baubles are £12 from Habitat. See the website for more details.