The payload consisted of mostly tracking devices: a T3-301 APRS radio run off a 2200 mAH battery and a SPOT personal tracker. The contents were set in a 1.5" thick walled ProPak styrofoam shipping container which was also filled with an insulating foam. Later I also decided to add a Veho MUVI Mini Cam. I cut a hole in the side of the container for the cam and lined it with insulating foam which the cam rested in.