During the brainstorm that produced Bumper Ink, we also had several other ideas we wanted to keep on ice:

• Weather Box - a tactile representation of outside weather, represented by a piece of granite that is heated or cooled to outside temperature, and films with water to represent precipitation
• Faucet knobs with tactile water temperature feedback
• Glasses which constantly record information, where information can be bought by other customers.
• Local greenhouse at intersections which is powered by energy harvested from the traffic. Therefore the temperature of the intersection and types of plants growing there would reflect the amount of traffic passing through.
• Similarly, street-side plants that indicate local pollution levels, possibly through color.
• Bringing your desk into the kitchen – a kitchen e-ink calendar that interfaces with the oven and stove-top timer.
• A toaster that prints different types of toppings and the date.
• Thermostats that allow one to plan a weekly heating pattern corresponding to outside weather.
• A car that changes its inside temperature (or the steering wheel temperature) if one mishandles it or drives poorly.
• Intimidating car bumpers that puff up and become spiky to ward off aggressive drivers
• An oven that changes color when it is on