Yes. Most stores like Home Depot and Lowes have a very large selection of fixtures, Plumbing equipment, and other things needed for home improvement projects.
hardware stores i believe
Whether you can buy wire connectors at local hardware stores depends on the hardware store. Some hardware stores do carry wire connectors.
Some do and some do not. Usually the big box hardware stores have the largest selection.
Ace Hardware
There are many stores that carry these supplies such as walmart, target, kmart, heb, krogers, safeway, piggly wiggly, and convenience stores. God luck on your search.
Most local hardware stores carry bell wire. The big-box stores probably only carry the DIY wireless kits. A suitable replacement is furnace thermostat wire.
Ace Hardware
One can purchase tool sheds in various home hardware stores. Home hardware stores such as Home Hardware, The Home Depot, and Rona carry many tool sheds.
Many of your local hardware stores carry replacement glasses for fireplace doors. Stores like Lowes and Home Depot are great hardware stores that carry these items. They also carry the glass door themselves in which could be cheaper then just replacing the glass.
Most of the local hardware stores will carry a electronic load balance. You can also find them at your local home depot store.
Tub faucets can be found at just about any local hardware store. National chain stores that carry them would be Ace Hardware, Lowes, Home Depot. Online they can be found at Amazon and Overstock.
Home improvement stores (such as Lowe's and Home Depot) and hardware stores carry them.