ok, pics and info. Looking at e-bay for what they are worth, $10 a piece seems to be fair.
Condition varies from near NOS to good, good with marker pen drawn / written on, through to I'll probably throw out.
Bumpacks I have a lot of
Water bottle covers (Aus pattern) I have lots of
Water bottle covers (US pattern) I have one or 2 of
Ammo Pouches I have about 5 of
Ammo pouches (US Universal ones) I have 2 or 3 of
Belts I have 2 or 3 of
Harnesses I have about 5 of
Nylon watter bottle covers and bumpacks (and 2L bladder covers) I have a few of.
Now, photos.
Water bottle cover (Aus)

better condition one
Aus and US ammo pouches
bumpacks, Vietnam era and post vietnam (pre auscam) pattern
harnes
belt