I only occasionally use my Garmin in the car (trips), but I recently got a new phone (HTC Droid Incredible) which offers a lot of features that would be handy if mounted in the car...(Maps, Streaming Pandora to the aux in etc.) Dreamed up this mount that also does double duty and holds my Nuvi. Flips out of sight when not needed.
Now you see it:
Now you don't. Finally a use for the cubby!:
Just a simple bent bracket on a hinge with a Nuvi compatible ball on it..
Holds the Garmin just fine too:
Feel free to duplicate!