Blocks
A much bigger block with a cavity/hole going through the center.
Regular 4" block with a 30 degree offset.
Quarry Products
A tonne bag of sand.
Plastering sand
Gravel
Aggregate mix
The bigger thicker blocks up from the 4"
4" clean large stone
2" clean medium sized stone
Bags
An empty big bag.
Drainage stone-small smooth rounded stone