A lava lamp is used for decoration.

A range hood is used so you can see what you’re cooking on the stove.

A fridge light is used to see at night what’s in it.

A torch is used so you can see outside at night.

A salt and pepper shaker light is used so you can see were you’re putting the salt and pepper.

A microwave light is used so you can see what’s in there.

The roof light’s are used so you can see inside you’re house.

A sewing machine light is used so you can see when you’re sewing.