In my F8 right now (it's not packed very full) I have:
Large Box:
T2'007
Large tray os spares/tuning parts
Ott Lite
Integy 0-30
Jack the gripper
pit towel
car stand
motor spray
Small box 1:
M18T
spare set of TC tires
Soldering Iron
Stand for Iron
Small Box 2:
Orion Advantage (in box...box also holds power distribution block and extra wires)
Duratrax Ice (in box)
3 SMC IB 4200 packs in boxes
Small box 3:
RCScrewz racer's metric kit
small parts box holding Xray spring kit
Micro Discharge tray
battery jig
Small boxes with misc small tools and accessories
Small Box 4:
Rivergate Bulldog 30A PS
Top tool storage:
Hudy drivers
side cutters
lexan scissors
X-acto knife
Digital calipre
spare motors
pinion case
shock, motor and bushing oils
Pocket PC
tire rag
Misc other small tools
and there is PLENTY of space left over...