Follow along and I'll share a couple of options for other mountings and uses. Please feel free and add suggestions..... Oh and please go easy on me as this is my first completed Instructables with hopes of more to follow.
Step 1: Locate Needed Parts
Package of spring clips
Epoxy, JB Weld or Servo Tape
If Servo tape isn't something you're familiar with well all the better, I can share a great secret. I'm not sure where it came from originally but RC modelers use this stuff to mount servos into their projects, its really good stuff and is fairly inexpensive. I picked up a roll at my local hobby shop in the radio control department. Just ask for Servo tape and they will know what it is. Here's a link
tower hobbies servo tape search
Rare Earth Magnets
(See idiotjohn's instructable below for help removing magnets from old hard drive)
How to pull apart a hard drive to get rare earth magnets
Step 2: Mix Up Some Epoxy and Glue It Together or Try Some Servo Tape
We'll use the tape or Epoxy to attach the magnets to the clip
Roll out the tape and firmly press on the magnets
Trim around the tape, remove the protective cover on the other side of the tape and press each magnet on ears of the clip, I would suggest doing one magnet at a time. If you use Epoxy, I'd suggest some disposable gloves, as I can see this could get messy if the magnets aren't clamped to the clip while curing. Flying magnets and splattering epoxy makes for a frustrating project.
Since this clip puts a death grip on your flashlight, why not mount it on your handlebars?
Using either tie wraps or Hose clamps, this clip could hold your light on your bike, yet have it removable.
Like I mentioned in the first frame, please go easy on me, I'm an instructables virgin. However I'd like comments and suggestions