Manfrotto Car Window Pod

The 243 clamps onto any surface up to 60 mm thick, which is exactly what a half-open car window is. It puts a camera outside the vehicle, on the glass rather than on the operator, so a driving shot holds still while the car does not.

Two 3/8 in male threads take a ball head and camera, and the same clamp works on a table edge, a fence rail or a door. Aluminum, 0.18 kg (0.4 lb).