a rediculously simple idea

I tend to prefer metal headphone plugs over plastic ones (my current pair came with them standard, and my previous pair had one grafted on after the plastic jack suffered from a terminal case of a computer falling on it) . The only real issue is they tend to scruff plastic or other materials they come in contact with - my old ipod had a little scruffed halo around the plug

Apparently the holes a standard hole puncher punches into paper are slightly larger than a 3.5 mm plug - they have these little plastic labels that fit over these holes to keep paper from tearing - pop one into the headphone's plug, the sticky side facing the jack on the device you want to protect, partially pop in the plug, slide the label into position and press down, and you have a cheap, invicible (if you get the transparent sort) and reasonably tough way to keep that area from being scruffed.

Can't believe i didn't think of that earlier.