A box came in the mail the other day. It was a surprise free gift from the local power company. Or I should say two free gifts.

The power company sent every one of their customers a new “low flow” showerhead, designed to cut down on water usage, but still feel like a real shower. The second free gift was four of those new curly-q fluorescent light bulbs, the kind that last longer and use less electricity while putting out the same amount of light. This small act cost the power company a few thousand dollars. But according to their figuring, in the long run if everyone replaced their showerhead and a few light bulbs, the savings would be in the tens of thousands of dollars. It was a small act, but it was a start to a big savings.

Small is big. From architectural trends like “The Not So Bi…