Wrapping the 2 feet of useless cable that every sparky seems to like leaving hanging out of every back box around their wrists then hacking their heads off with my old blunt trowel that's covered in adhesive
I must say most of the sparks around my neck of the woods are pretty good. They coil the cables up into the boxes out of the way.
Did a job for the council a couple of years back and they left tails hanging out about 2ft long so I cut them back and pushed them in the box. They went ballistic when they saw what I'd done as they had marked the ends of em for what was what! They left them short after!