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.
Can Opener
To dream of a can opener implies that you possess an open mind. It may also be suggesting that you are a confident person who is able to accomplish any task you set out to do.
Light Bulb
To dream of a light bulb indicates that you are psychologically ready to face reality. A light bulb also represents your conscious side. This also symbolizes enlightenment, unique ideas, and ambitious visions.
You are also moving into a new direction.
Hair Dryer
To dream of using a hairdryer speaks of the search for a quick fix and is a reminder that it can be better to allow nature to take its course. A situation may be currently unfolding and applying an organic attitude to it may result in a broader outlook and a highly satisfying flow of energy.
Bumper Car
Dreaming of riding a bumper car represents a playful, innocent feeling of glee and a sort of giddy happiness in your life. It always seems to be that not many frowns on riding a bumper car hence dreaming of bumper cars represents this very natural happiness. However, if you were displeased seeing or riding a bumper car, it may be good time to take a little vacation.
Power Lines
To dream of seeing or being entangled in power lines portrays your strive to gain power. There is a hindrance either in your relationship or profession.
Electrocution
To dream about an electrocution suggests that a path you are on will go terribly wrong and could actually lead to your demise.
Defibrillator
To dream of a defibrillator indicates that you may be about to receive a sudden and revitalizing gift.
Sewing Machine
To dream of seeing a sewing machine symbolizes your ability to cope with hardship and obstacles.
Extension Cord
To dream about an extension cord indicates that you should surround yourself with people who have plenty of energy. Think about the part of you that has been lying quietly.