Park your car optimally in the garage with a tennis ball
For some family members it is often difficult to park the car optimally in the garage. In cramped conditions, it can be decisive how far the car is driven in or how far it should be offset to the left or right. Remedy here is a tennis ball. So first park the car optimally. Then attach a string to a tennis ball. The other end of the string is attached to the garage ceiling. The tennis ball should then be exactly in the center of the driver, e.g. a hand's width above the windscreen wipers or in the center of the disc on the windscreen. That way, "parking yawners" manage to place the car in the garage to the centimeter.