ideas

 David Wiskind
"three high-definition cameras placed a 120 degrees apart from each other mounted to its payload."

"track the balloon’s flight via cell phone, picking up information from the GPS sensor it piped through an amateur radio system, which was also placed in the balloon’s payload."

"a latex balloon and encased the cameras and radio with polystyrene foam to prevent temperature and water damage. They threw in a few hand warmers for good measure "

i found these sentences in an article which can be found on:  http://www.troyrecord.com/articles/2012/01/28/news/doc4f248f5811b5d498758852.txt?viewmode=default