Record 25 minutes of objects moving

I'm working in a project in which I would like to analyze the eye movement while someone looks at a video. The videos can be filmed with a smartphone, as long as it is horizontal and has a decent resolution. I need 70 videos that last about 20-30 seconds. The videos should focus in complex objects (like toys, decoration objects, electronics). By complex I mean that the objects shouldn't be as simple as a plain ball (but a ball with drawings is fine). The objects should not have words (that can be easily readable). The videos should have movement, either from the camera (like circling around the object) or the object itself (being pulled by a cord or cable). The object should cover about 1/5 of the scene. No human (not even a hand) or other animal should appear in the video. But it has to be in a scene where other things appear, but don't move too much (so it can be filmed in different parts of a house, in the garden, in a park). From the 70 videos: - 35 should have a single object in the scene. - 30 should have two objects in the scene. - 5 should have three objects. The same object can only appear in two videos. I'm attaching an example videos that I'm using, but that are from living things.