California and Minnesota have this big bummer of a law that states that no one can drive with anything hanging off of their windshield. I finally got tired of looking down near my gearshift for my GPS map, and decided to get a dash mount.
Unfortunately, it's $20 wherever I look for a decent beanbag mount. Ridiculous! Garmin sells disk mounts for their products and many reputable dealers include dash mounts now. But what if you need a dashboard mount for your old GPS? Well it's pretty easy and cheap to make one.
Smooth, flat plastic or something surface (if it's not absolutely smooth, your suction cup won't mount to it!)
I used a cd case. You can use a jar lid.
Double sided mounting tape
Step 1: Get the appropriate materials
Your disk needs to be made of a relatively sturdy plastic. I used a CD case that I had lying around. The outside of the plastic was smooth. The inside of the cover was slightly rough and not conducive to suction. Therefore the rough side was the one I placed adhesive on! However, both sides should be as smooth as possible (the adhesive sticks better in my experience) so I ended up supergluing two disks together so both sides were smooth.
Obviously you'll want to try the suction mount before using the plastic.
Your scissors need to be pretty strong.
Ditto with the adhesive tape.