Also, sorry if the instructions are not quite up to par, this is only my second instructable, and my first one wasn't very complicated to begin with.
Edit: Please feel free to post any comments on how I might improve this instructable or future instructables, I could really use the advice.
Step 1: Materials
-Bungee Cord (short)
-2-3 Zip ties
-GPS Belt Clip (The one that comes with your GPS, though most belt clips of the same kind will do, as they are the same diameter connector)
-Length of foam pipe insulation
-And a knife(or scissors)
-A bike (obvious, but not pictured)
Step 2: Begin!
First, attach the GPS to the belt clip, and then place the belt clip on top of the handlebar area. Move it around a bit until you find a position of the GPS that you like. Remember that spot.
I don't really know how to say this well...
Tighten one zip tie below the leaf spring of the belt clip, and another above(see pictures). This will secure the belt clip to the handlebar and keep it from moving up or down. You could also just use epoxy, but I wanted the belt clip to be removable. I would not clip the zip tie ends for now, as you may decide to reposittion the clip.
Don't worry about the big gap between the bottom of the GPS and the handlebar piece. We'll get to that.
Step 3: Foam Time!!!
Next, slide the foam in between the GPS and the handlebar piece. The foam will cushion the GPS and prevent it from sliding side to side also. Make sure the foam wraps somewhat around the sides of the GPS unit. If not, you made need wider diameter insulation tubing.
Step 4: Wrapping it up