Here a tool I made this week, I call it a socket on a stick. I made it to attach the water lines to my bathroom sink, as there isn't enough clearance up there to tighten it with a wrench (you can barely get yer fingers up in there).
The socket was fifty cents from a pawnshop, which was cut using a thin abrasive disk in an angle grinder. I left a small shoulder on the base of the socket to keep it from sliding off of the hexagon nut it will tighten.
The socket and the stick were welded together using 6013 GMAW rod and a Miller buzzbox; I was very surprised at how easy it was to weld these together (yes my welds look like turkeysh*t, but they will function in this application).
Here's a few more thousand words: