Pig's bladder, my shiny metal ass. I'll bet it's really this...
http://en.wikipedia.org/wiki/Futurama:_Bender%27s_Big_Score#Torgo.27s_Powder

Buckminster Fuller said if we shrink the earth down to a 12" diameter steel ball and chill it, the condensation from your breath would be the depth of the oceans.

Another interesting fact, Lake Tahoe holds a volume of 151 km³. With one dispersion of Lake Tahoe's water, the State of California would be completely covered to a depth of 14.5 inches.

Suggestion... put a full size, half high platform in the box, chargers below with the devices on the platform inside the box. All contained. Maybe a few portholes for heat and noise exchange?

Cheers to the brilliant miniature human!