You use it for talking to each other when everyone isn't in the same place.
telephone
It's really old and it helps you see in the dark.
light bulb
You use it for traveling from this place to another place.
car
You feel comfortable and convenient when wearing it and it's also fashionable.
jeans
It is used for producing electricity.
nuclear reactor
It is used for cleaning and removing oil, dust, rainwater, and dirt that get stuck to the windshield.
windscreen wipers
It helps people in building and mining.
dynamite
It is used for signaling, lighting or protecting someone when they get trouble.
signal flare
It helps housewives wash all the bowls and plates clean and save time.
dishwasher
