Looking forward to reading some more answers on this since proud moments seems to vary tremendously (social vs. monetary). Keep going. :)
3 karma · joined August 14, 2014
http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=H...
Another possibility would be solar charging similar to: http://www.seiko-cleanenergy.com/watches/solar/
Other than that, I would probably go for Paris or Zurich, dependent on your startup idea.
In general: Try to find a place, where like-minded startups are situated. This swarming of common interests is indeed very valuable for skill, experience, and knowledge transfer.