I think my cousin actually cut up his juice bag back when he was in grade school. I think he only has one "pit" now, as it were. But this isn't that kind of juice bag. This the Juice Bag.
This Voltaic-alike backpack powers your toys and baubles through a female cigarette lighter port adapter. Made of rip-stop nylon, this $199 back comes in multiple colors and can charge a cellphone in 2-4 hours or a laptop with a special Juice Bag adapter. They should make one that can hold liquids. Call it the Tea Bag. [Thanks, Jon]
Product Page [RewareStore]