Gareth Branwyn of Make has assembled a collection of the best of his Maker Tips column from 2017. There are some gems in here, like John Park's method for twisting a pair of wires (above) and Becky Stern's method for "stripping, soldering, and shrink-tubing a cable splice. The trick is to offset the wire joins so that, when you add heat-shrink to the individual wires, and then the entire splice, you don’t get a big lump in the cable." https://youtu.be/6O7ScaYmZs8