Do try this at home GROOT, a character from Disney’s film “Guardians of the Galaxy”, is usually mass-produced by the entertainment company as a small, collectable figurine and sold by retailers such as Toys “R” Us. But just before the release of the second film in the franchise earlier this year, Byambasuren Erdenejargal, a Mongolian enthusiast, noticed that people in a 3D-printing group on Facebook were searching for a computer model of Groot.