Generator 
To see a generator in your dream indicates an independent source of physical motivation and also the ability for creation with no help from outside influences.
Lawn Mower
To dream of a lawn mower suggests the need to redirect your negative thoughts into something more acceptable and productive. You need to tame yourself and guard against provocation and exposure to situations that might cause you to lose your temper.
Typewriter
To dream of a typewriter indicates that you need to work on enhancing your ability to communicate with others.
Instruments
Musical instruments in a dream represent harmony. Technical instruments are symbols of your work or an emotional state which you associate with those tasks.
Cash Register
To dream of a cash register indicates that you are having anxieties about your money situation. Perhaps you feel as if you won't be able to pay all of your bills and debts. It could also mean that you will be receiving an unexpected inheritance, pay raise, or other money source.
Record Player
To hear a record player in a dream suggests that your mind is caught going in circles.
To hear a broken record in a dream indicates that you are struggling to make progress and overcome a recurring problem.