The problem with current wheelchairs? They're not versatile enough for developing countries' unpaved roads, steep hillsides and generally handicap unfriendly buildings. Enter the Leveraged Freedom Chair, a more powerful wheelchair controlled by levers that moves like a mountain bike.
You probably don't spend much time thinking about door knobs, or how they could be improved. Maybe you should! This glass globe lets you catch a glimpse of what's going on in the room you're about to enter.