Here's something that should come in handy during a week-long blackout. According to Buzzfeed's Matt Stopera, this picture snapped near NYU in downtown Manhattan shows a couple of New Yorkers charging their cellphones using a BioLite Campstove.

As explained by PopSci, the device uses heat from the fire to generate electricity, which is used to run a fan so that the stove burns hotter and cleaner. This can also be used it to juice up dead batteries for devices such as cellphones, and will definitely come in handy during emergency situations.