Tools needed are a plier to bend the wire and a screw to tighten the hose clip. This can be mounted on either a bicycle or motorcycle or maybe even places like a vehicles steering wheel or even a hang glider !!
What makes this so special is it's simplicity and good looks.
Step 1: The materials
Step 2: The materials 2
Step 3: The tools
A screw driver will come in handy to tighten the hose clip and maybe even a file to smoothen out any rough edges at the ends of the wire (you don't want to scratch you eTrex).
Step 4: Bending the wire
A piece of cellophane/scotch tape is double folded (sticky side inward) at the top to prevent the eTrex from sliding as a precaution.
After several uses the wire may get loose (i.e. not grip unit as firmly) but can easily be bent by hand with the eTrex removed to bring it to it's original shape.
To attach the hose clip, unscrew the worm and straighten out the clip a bit. Then wrap it around the handle bar and insert the open end back into the worm and tighten it slightly.
After mounting the eTrex the whole assembly might need to be bent a little to adjust the angle of the eTrex depending on where/how you mount the clip.
Step 5: And finally
It might be a little tricky at first to insert and remove the eTrex but it just takes some getting used to. My eTrex has a plastic cover (from a water bottle) to prevent any scratches but that is another story.
The steps used here can be used to construct handle bar mounts for other devices (just have to bend the wire differently) e.g mobile phones, multimeters etc.
And last but not the least, remember to keep your eye on the road and not the eTrex, the GPS unit is of no use if you can't get to your destination in one piece !!!