1. Remember those "mood rings"? They interpreted your mood based on your temperature. I'd like to see a faucet that contains a simple system for relaying the temperature of the water to the user. The water nearest to the end of the faucet is all that matters here..I've noticed my son is in the habit of touching the stem of the faucet before washing his hands in order to tell the temperature of the water, and to avoid burning himself. How about a visual representation? 2. I'd like to see a...