Smart bags with the ability to charge your cell phone have been popping up here and there.  Ralph Lauren jumped on the bandwagon by releasing a limited edition bag with the aforementioned abilities. The price? Around $5,000.  For those of us who are looking for a more economical variation, we need only turn to the Mighty Purse.  It’s a clutch that you can even throw inside your purse. It contains a lightweight battery that will charge your cell or any other smart gadget.  The Mighty Purse itself easily charges by using a USB port. Mighty Purse is available now in a variety of styles, materials and colors.  Prices start at $89.99.