Here are some other accessories for you socket set.
Here's an extension bar the has an LED light built in that shines through the socket to illuminate your way on that bolt that you cant get onto because is hidden in a dark place and there's no room to shine a torch/flashlight in.
I've got a couple and they have been useful on the odd occasion.
Next up we have extension bars that have a locking mechanism to keep the socket on the end of the bar and not left behind on the bolt.
These are great when you cant reach the bolt as it's down in a hole and you don't want to have the socket come off down in the hole.
Good for spark plug sockets too!
Universal joints and sockets
These are handy for getting around obstructions
These aren't any good for use on a rattle gun.
Swivel joints and sockets
These do the same job as those above but are better, stronger and suitable for use with rattle guns.