for what it's worth... you can get the following in a 4x6 heavy duty zip top pouch that holds 350ml of liquid...thickness is that of the miniBic and whistle

mini Bic, wrapped with 4' duct tape with button compass taped on
TOPS thin 3 chamber whistle
4 Katadyn ClO2 tabs
2 Tylenol, 2 Advil
3 Steri Strips
2 cloth knuckle bandaids
2x2 Blood stopper gauze
povidone iodine prep pad
6' duct tape on card
small ferro rod
heavy duty needle
20' 15# mono line
1L pouch (from food processor bag)
rescue flash signal mirror
AAA battery (for Fenix E01)

I went to the heavy duty zip top pouch originally to have the water transport capability... has been in a cargo pocket for 6+ months and shows no wear...as the active part of the hurricane sesason gets closer, switched the Vic Farmer out for a Vic Multi tool (wish it were titanium)