Essential Miscellaneous Accessories for Electrical Projects
Lamp Holder
Used to hold light sockets where design is not a concern. Often used in garages or basements, or as a temporary fixture.
One type has a pull chain to turn it on. The other, a keyless lampholder, does not have a chain. Another type has a socket, two receptacles and a pull chain that turns off the lamp but not the receptacles.
Typically is a round porcelain fixture with a socket with prewired leads ready for connecting to a circuit. It also has screw holes for mounting it to a box.
Another type is the Pigtail. It is merely a socket with wire leads and without a fixture. It is also used for temporary lighting or for testing.
Also known as a snake
Used for pulling the electrical cable or wire through the wall or through electrical conduit.
Often comes in lengths of 25 or 50 feet, 1/2” or 3/4” wide with a hook on one end. Also comes coiled in a case.
Also used to probe wall cavities to determine the best path for routing a cable.
Most common type is plastic, usually 3/4” wide. Handy for many uses. In electrical work, it is used to cover bare wires after they have been exposed
Used to connect the bare ends of two wires inside a box. At least two are required at every circuit connection.
Available in a variety of sizes and colors.
Used to remove cartridge-type fuses. 
Connects wires with a twisting action.
Used to mount cable to studs or other framing members.
There are different sizes, so make sure you are recommending the correct one.
Fish Tape
Electrical Tape
Wire Nuts
Fuse Puller
Insulated Staples