Blocks
A much bigger block with a cavity/hole going through the center.
Chips
Bags
An empty small bag.
Small empty heavy duty sand bag.
Gravel
Clause 804
Aggregate mix
Quarry Products
4" clean large stone
2" clean medium sized stone
Regular 4" block with a 30 degree offset.
A tonne bag of sand.
3/8" Chips. Very small stones
Concrete block that weighs one tonne.