Family Home and Life blog shows how to take a outdoor solar light and to create a rechargeable mason jar light that can be used indoors. You can use it in the evening and recharge it out door all day.  This project could be an amazing assets in an emergency  situation accompanied by a power outage.

Click here:
http://www.familyhomeandlife.com/2012/03/mason-jar-solar-light.html

I found a product that is a rechargeable mason jar solar lid.