Where will the pocket-sized power station go when you make it and what will you do it with?

Question: Where will the pocket-sized power station go when you make it and what will you do it with?
- Keywords:
  pocket,
  power station
Asked by monty and ben to Paul on 15 Jun 2015. This question was also asked by Dan and Josh, monkey123.
- Paul Brack answered on 15 Jun 2015:
  
  The idea is that you could carry it round with you, like a battery pack, but that it would last longer and be lighter. You could use it to charge your smartphone or tablet. It would be especially useful if you were camping, or somewhere else where you were far from a plug socket.

Question: Where will the pocket-sized power station go when you make it and what will you do it with?