If you collect your spare change in a jar, all those coins add up over time, usually to a larger amount than expected. 

Small amounts of consumed energy throughout your home add up as well. Plug "energy vampires" into a smart power strip that detects dormant devices or unplug items when not in use, especially those with illuminated controls.

Computers

Surround Sound Systems

TVs

Satellite / Cable Boxes

Video Game Consoles

Standby Coffee Maker

Printers

Cell Phone and Tablet Chargers

Microwaves