Nothing in my life seems random or little, but running water comes to mind because I've lived without it. The joy of being able to step into a comfortably warm shower and stay as long as you want is surely one of life's great pleasures. Turning a tap and getting running hot and cold water in the kitchen sink is a delight beyond reckoning, if you've had to trudge down a steep place and back to carry water up in a bucket and then chop wood to heat it before you can cook or wash dishes or clothes. And the convenience of a flush toilet compared to doing without, I will leave to the imagination.