Blocks
A much bigger block with a cavity/hole going through the center.
Regular 4" block with a 30 degree offset.
Chips
3/8" Chips. Very small stones
Quarry Products
Drainage stone-small smooth rounded stone
The bigger thicker blocks up from the 4"
Concrete block that weighs one tonne.
Bags
An empty big bag.
Regular 4" block with a 90 degree offset.
4" clean large stone