Based in NYC, I often see people (both for deliveries but also for commuting) on bikes so I see the use here. The Siva Atom Is a battery pack that you charge by riding your bike. The energy generated by cycling is stored in a battery that can be used to power other devices via USB.
As expected, the Atom is weather resistant and can be used to charge a wide variety of devices.
The Siva Atom retails for $129.99. Throw in carbon neutral shipping and I’m in!