Boxy, blocky, black power bricks with coaxial power plugs, they're everywhere! Wouldn't it be nice to be able to connect wires to them in a non-permanent manner without any soldering or snipping required? Recently I wanted to use a computer fan as a desk fan, and I happened to have a 12 volt power brick from some (likely long-ago trashed) computer speakers. But I didn't want to cut or solder the wires because that means that I'd better be darn sure the computer speakers are toast, right? So here is a non-destructive solution using only two paperclips bent with some needle-nose pliers I had lying around. First, here's the finished product:
You'll need a pair of pliers or other bending device, a paperclip (a large sized paperclip was used for this example, but the smaller types may work just as well), and the plug you desire to attach leads to.