In Colorado, it's illegal to harvest rainwater, because someone downstream owns the rights to that which falls from the sky.
In California, almost 20 percent of electricity goes to the treatment and delivery of water.
Nationally, public water systems use 50 Billion killowatt-hours of electricity to operate.
It is generally held that 15 percent of your energy bill just keeps stuff warm, so that when you turn them on, they'll come on right away, rather than having to wait. Cellphone chargers, televisions, cordless phone stands, rechargeable battery stations, etc. You could save that money if you just unplugged those devices until needed. Or, you could group them near a power strip, and with one switch, get them all. Perhaps it's not trivia after all.