I don’t know if this is a Wellingtonian exclusive, or just that I hadn’t come across it before, but here’s something cool at the Museum Hotel in Wellington, New Zealand (where I’m staying right now for this week’s Webstock conference): To turn your room lights on, you dock the keychain in a little slot by the door. Inserting the card turns the main lights on. Removing the key card turns them all off. It’s a natural place to keep your key, while doubly reminding you (or forcing you) to turn the lights off when you leave. That’s good design.