2.1mm power connector plug

A very simple plug for the common 2.1mm power connector (usually 12V). I made this for my PoE IP cameras that had an extra 12V power connector which I'm not using. Not watertight, but it does help keep the spiders out and corrosion down. (you could add a dab of silicone around the end to make it watertight)

I recommend printing in something flexible -- you don't want it to crack in half and get stuck in the socket!