Once upon a time, I used to consider myself well-versed in camping. I could put up a pup tent in about 2 minutes flat, easily start a cooking fire without lighter fluid, and tie a bunch of cool knots.

For many of us, untangling our earbuds is the extent of our survivalist knot knowledge. Tying knots is just for sailors and mountain climbers, right? Turns out, there are a few simple knots that you ...