Pliers, screwdrivers etc. are used on many types of projects.

Fish Tape. This is a reel of strong, flexible wire that is used to pull new or replacement electrical wire through the walls. If you are dealing with a mobile home with wood paneled walls it may be easier to carefully peal off the paneling, run the wire and then re-install the paneling.

Three prong outlet tester. These are cheap and simple to use. You simply plug the tester into the outlet and see which of the two yellow and one red lights come on. It will let you identify an open ground, open neutral, open hot, hot ground reverse, hot neutral reverse and correct. In many of these situations everything will appear to work normally and a problem will only occur if someone goes to work on the wiring assuming it is set up properly and it is not. IUse this tester on any outlet that you plan to open, even in a new home, just to be sure you don't get a nasty surprise. Be especially concerned in an older home that showed evidence of non-professional electrical work. A multimeter will tell you more about the electrical characteristics of your house, but it's probably overkill for most people.

Wire stripping tool. Don't buy the cheapest one you can find. A good one will strip the wire cleanly and easily and not scratch the wire. Some models have a place to insert stripped wire and shape a loop to go one a terminal.

Voltage detector. A good,cheap way to make sure the wires are dead before you work on them. A lamp or radio works too.