I was in Chicago for the Oracle Development Tools User Group (ODTUG) conference last month. This was a typical technology conference in many ways, and one of the vendor giveaways in the conference back was a power pack for your smartphone.
However, it was different in one interesting way: It also offered a power pack for the participants. Each morning, there was a Qigong session by the river. Qigong is an ancient health practice that improves the flow of life energi (Qi) in the body.
Traveling techies are always on the lookup for an opportunity to recharge their devices. Remember to also recharge yourself.