Blocks
A much bigger block with a cavity/hole going through the center.
Quarry Products
Drainage stone-small smooth rounded stone
Bags
An empty big bag.
Plastering sand
2" clean medium sized stone
Concrete block that weighs one tonne.
Small empty heavy duty sand bag.
Gravel
Aggregate mix
The bigger thicker blocks up from the 4"
Screenings-Very dusty gravel