Answer:
Sure! Calculate the energy savings per year from lowering your water heater temperature from 160F (where your dad set it) to 110F (where it should be set).
Here's another: Design a new spacecraft heatshield.
Here's another: When coal took over from wood-burning heating, there were some very innovative wood-burning furnaces. Dig up the technology and adapt it to modern use.
Here's another: How can you REALLY save gas? Do any of those gas-saving gimmicks work? Use a gasoline powered generator for accurate numbers.
Here's another: Simulate a Martian environment and see what grows.
Here's another: Invent some cool way to clear space-junk from orbit.
Here's another: Many people say that breaking up an incoming asteroid or comet is the wrong idea. Prove them wrong. (They ARE wrong!)
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