ARMS
BUBBLE
BRAIN
CHEST
COLLAR
DONUT
KNEES
KNOB
LEGS
MICROPHONE
NEON
POWER PACK
PROG. BAY
RADAR
SPINNERS
TORSO
TORSO HOOK
TREAD
VENT
         

MICROPHONE

The "microphone". I'm going out on a limb and saying that it was probably not supposed to be a microphone, but an atmosphere analysis collector. Whatever, it was kind of fun to make with the same round wood piece as I used for the spinners, flattened on the outside. It was then covered with a piece of window screen.
UPDATE
It only took me three years to update this part to make it more accurate.