Bags
An empty big bag.
Quarry Products
Drainage stone-small smooth rounded stone
Chips
Small empty heavy duty sand bag.
3/8" Chips. Very small stones
Blocks
Regular 4" block with a 90 degree offset.
A tonne bag of sand.
Plastering sand
Gravel
Clause 804
Concrete block that weighs one tonne.
4" clean large stone
2" clean medium sized stone