Abstract: A toy building set of building elements (10, 14) having a coupling means (11, 12, 13) by which building elements (10, 14) may be built together. One of the building elements (20) contains a camera, which is adapted to record images of its surroundings. A user may built a remote-controlled toy (30) in which the building element (20) with the camera may be arranged in positions and with an orientation at the user's option. A film production system with a camera and recording and editing facilities. Movable objects and a plurality of predefined positions for the movable objects, and means for holding the movable objects in selected one of the predefined positions when the camera records one or more images. Thereby the movable objects can be placed accurately and repeatedly in predetermined positions. The predefined positions are preferably defined by toy building elements having coupling means for interconnecting building elements.