I used to work backstage at concerts assisting my dad who was a sound engineer. We had my favourite cable of all time, a 30cm extension cord that was affectiona

I used to work backstage at concerts assisting my dad who was a sound engineer. We had my favourite cable of all time, a 30cm extension cord that was affectionately known as the "you've got to be #&$@ing me" cord. You'd run a 40m extension cord up and around the stage and get to the light you needed to plug in and you'd always be just short. When I went into IT I quickly made myself some 30cm long Ethernet cables with a keystone on one end for just such an occasion.