[DampRobot]

I've heard that EJ from 254 likes to rip out the wiring his kids have done overnight if he doesn't think it's neat enough, just to make them do it again. This really gets great results. You can also employ the RC method of making students do pushups if they don't do quality work. Discipline is a very necessary part of making a neat electronics board! If kids get complacent, they tend to stop aligning the power wires together, making sure that the speed controllers are evenly spaced, and even "just plugging in" the PWM cables without zip-tying them down.

As I always say: beatings will continue until morale improves!