If you’ve ever tried to enlarge a photo of a breadboard found on-line trying, in vain, to figure out how the rat’s nest of wires is connected, you know how messy a circuit can get when prototyping.

A friend gifted me a box of pre-cut jumper wires that have proved to be valuable in terms of keeping prototype circuits manageable. Dupont jumpers are easier to switch on the breadboard, but I recommend that when one part of a circuit is working you clean it up with flat jumpers before moving on.