Chip McClelland created this visual aid for parking in a two car garage:

Garage Parking Sensor Board

Let’s face it, garages are simply never big enough. There is always more you want to put into a garage than will fit and once you park your cars, things get tighter still. To get the most out of this space, your car needs to be parked correctly everytime. That is what this little device seeks to do.

chipmc has shared the board on OSH Park:

Garage Parking Sensor Board