In preparation for my West Coast trip this summer, I got a cheap GPS mount ($2.69 on eBay) for my Garmin Nuvi 350 that attaches to the handlebar. In addition to being a GPS, the Nuvi 350 includes an MP3 player which is a welcome addition to the bike. The handlebar mount seems to work well, is conveniently located, and allows me to zip tie the cords to the handlebar resulting in a reasonably clean installation.
In the past, I’ve used a couple of strips of velcro on the dash console. While this worked, it always presented problems with routing the wires (charger and AUX). With the wires touching the tank for a couple of weeks, the cords actually dulled the paint on the gas tank. Now that I can secure the cables, this should no longer be a problem.