Stores are important for communities because they provide food, drink, tools, e.t.c. When you need something you go to a store. It also might help people near the store grab whatever they need.
A store has :
Shopping carts/baskets.
Security system (camera, alarm, merchandise protection)
Dressing rooms/curtains/dividers.
Display cases.
Sign holders.
Countertops.
Dividers.
Mirrors.