Every home owner should have a Plumber’s Emergency Kit. Get a 5 gallon bucket and attach a tool caddy to the outside, that way you can catch water and keep your tools dry. Have a forced cup and regular plunger handy. Each plunger has it’s own specific use. Various size wrenches to include medium slip joint pliers and an adjustable wrench should cover most jobs. A multi- bit screwdriver. An assortment of Allen keys. Duct tape and leak sealing tape are good until a permanent fix can be done, plus Teflon tape to seal leaks around threaded connections. Heavy duty paper towels or rags. This should be a good start for the do-it yourselfer!