Check this out... http://news.wired.com/dynamic/stories/P/PAPER_POWER?SITE=WIRE&SECTION=HOME&TEMPLATE=DEFAULT
It's a paper battery using two layers of nanotubes with an electrolyte. They've made a battery and a capacitor.
So... have you seen the flying capacitors? Use the same tech with a fabric and layer batteries with a cap... and you have a flying carpet. :)
thanks