Blocks
Quarry Products
A tonne bag of sand.
A much bigger block with a cavity/hole going through the center.
Plastering sand
2" clean medium sized stone
Bags
An empty small bag.
Chips
Concrete block that weighs one tonne.
Small empty heavy duty sand bag.
Regular 4" block with a 90 degree offset.
Drainage stone-small smooth rounded stone
Gravel
Aggregate mix