Bags
An empty small bag.
Blocks
Gravel
Screenings-Very dusty gravel
A much bigger block with a cavity/hole going through the center.
Chips
The bigger thicker blocks up from the 4"
Concrete block that weighs one tonne.
Quarry Products
4" clean large stone
Regular sized blocks used for most building jobs.
Regular 4" block with a 90 degree offset.
Small empty heavy duty sand bag.