- Remote aid delivery by drone: build and send small robotic aircraft to remote areas and drop aid, preferably starting with medicine (lightweight and very useful). Small helicopters (quadrotor drone copters as you see at TED/MIT) could land and accept return packages if necessary. Trips could be made to hazardous places where human-driven aid drops can't venture. Additionally, all aid drops could be done cheaper and more efficiently. [The drones should be solar-powered?]
- Microwave oven with a solid, opaque door. On the door put a nice 1020p screen and inside put video cameras. You could microwave food, see a convincing video of it cook and not have to deal with harmful radiation or an unpleasant grilled screen.
- Pizza button. I had this idea about two years ago, someone in Dubai is currently executing (I think). You order a button, a physical red button (or an app with a big button, but that's not as cool). If you press the button, a pizza arrives at your location (tracked either by smartphone or by pre-set address). Default pizza arrives unless other instructions are set. I would insist on extreme simplicity: no options, no choices. Just "press button to receive pizza".