Bags
An empty small bag.
Gravel
Screenings-Very dusty gravel
An empty big bag.
Quarry Products
4" clean large stone
2" clean medium sized stone
A tonne bag of sand.
Blocks
A much bigger block with a cavity/hole going through the center.
Clause 804
Drainage stone-small smooth rounded stone
Regular 4" block with a 30 degree offset.