Bags
Small empty heavy duty sand bag.
Blocks
A much bigger block with a cavity/hole going through the center.
Gravel
Clause 804
An empty big bag.
Quarry Products
A tonne bag of sand.
An empty small bag.
Regular 4" block with a 30 degree offset.
Concrete block that weighs one tonne.
Screenings-Very dusty gravel
Plastering sand
4" clean large stone