Sabbath-friendly appliances from Star-K

How do modern Jews survive after sun-down on Friday given they can't use electricity? 
They buy Star-K-approved devices.  These devices include a "sabbath mode" in which they won't turn on as a direct result of human intervention.  Flip a switch, the light doesn't turn on.  However, it may turn on randomly 10 second later, not as a direct result of the switch flipping.  Open the fridge, the light doesn't come on and the compressor doesn't immediately compensate.  So if you're looking for a kosher oven, look for the Star-K.