Gravel
Screenings-Very dusty gravel
Blocks
A much bigger block with a cavity/hole going through the center.
Aggregate mix
Concrete block that weighs one tonne.
Chips
3/8" Chips. Very small stones
Bags
An empty big bag.
Regular 4" block with a 30 degree offset.
Regular sized blocks used for most building jobs.
Quarry Products
2" clean medium sized stone
An empty small bag.
A tonne bag of sand.