Good design, inventing and creation to me is often about the obvious. I
don't mean this is a demeaning or negative way at all. Discovering the
obvious, seeing what is in plain sight is a special skill.
Take the bicycle lamp as an example. Traditionally these have
come in two varieties: battery powered or dynamo powered. Batteries
cost money, are bad for the environment and have to be replaced(often
at inconvenient times). The dynamo powered bicycle lights are human
powered and so do not have any of the drawback of batteries but they do
make the cyclist work harder and go slower(albeit a little bit). How
obvious exactly is a wind powered bicycle light? This is an invention that each of us could have come up with.