Here are two more nuggets I was contemplating. 
The first is a stretch, I think, but what if the act of driving a car became a āgestureā I know that cars currently can react to driving conditions, and performance varies depending on the need (variable valve timing, cylinder shut off, TCS, audiās quattro).
What if instead, a vehicle reacted to the driverās emotional state? The first concept uses an LED strip which informs other drivers about you current aggression/stress level by changing color. The car could measure this based on your driving actions or bio feedback on the steering wheel/seat.
The second sketch is another twist-a-pot-to-control the heat concept. I thought of this early on, but was concerned with obvious safety issues. With multiple pots the user must reach over and around, trying to perform precise maneuvers, bumping pots, handles hanging off the stove, etc. My solution addresses these issues.
These were both done in ~25 min.
