Single RCA Coupler / Joiner (Female to Female)
If only it was a lightsaber! How awesome would that be? At this size, it would be great as a letter opener, cheese slicer or lockpick! Fortunately for my delicate grip on reality, this isn't a miniature lighsaber, but a Singe RCA Coupler / Joiner (Female to Female) adaptor, and it uses the science of electrical conductivity rather than the magic of film to achieve a special place in my heart.
You see, this petite connector allows you to join two male-terminated RCA or Coax cables together and increase your cable run length without spending big bucks on extra-long cables. If you need it to, it can simply convert a male plug into a female socket for whatever use you need (provided that use is approved by your equipment manufacturer!).