I'm blind as a bat. When I got my last pair of glasses I opted for the version that has the sunglasses attachment that mounts magnetically. Over my time of wearing them there have been times when I 've needed to take them off, but not had time to put them away (e.g. driving into a parking garage). I would either put them in my lap or the cup holder. Not only did this risk scratching them, but invariably they go flying if I have to break hard. I decided to take advantage of the magnet already in them to solve this problem.
Step 1: Tools and Materials
*A rod or other suitably shaped piece of ferrous material
*A cotton ball
*Dremel w/ cut off wheel (or other implemtns of metal cutting and shaping)
*Bench vise or other way to hold your work piece.