Make: Projects – Secret Garage Door Remote
This easy mod retains all of the convenience of the remote clipped to the visor while dispelling most of the risk. The remote button is concealed on the underside of a plastic beverage cup that rests in your cup-holder, with the electronics concealed inside the cup. To activate the opener, just push down on the top of the cup. From outside of the car (and from inside it, too), the remote looks like an empty soda cup you just haven’t thrown out yet.