I had a shoelace that was pretty well mangled, and didnt want to run out and buy a new pair. Granted they are usually pretty cheap, but I have a few hundred feet of 550 paracord at home and figured I'd make some quickly. I wanted to also have the stiff finished end (called an aglet) that wasn't just melted paracord. I decided to try heat-shrink tubing. Heat-shrink tubing is supposed to be for electrical connections, but it's incredibly handy for other things as well. The tubing generally comes in 3 sizes. I've seen small medium and large, in black, red, and white respectively. Your mileage may vary :)
Materials
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27 to 72 inches of paracord for each lace (I made each of mine 60 inches, therefore needed 120 inches)
Automotive Heat shrink tubing, (about 1.5 inches per lace, for 2 laces, 3 inches)
Lighter or match
Great instructable!