Blocks
Regular 4" block with a 90 degree offset.
A much bigger block with a cavity/hole going through the center.
Concrete block that weighs one tonne.
Bags
An empty big bag.
Chips
Gravel
Aggregate mix
An empty small bag.
Quarry Products
4" clean large stone
Regular 4" block with a 30 degree offset.
Small empty heavy duty sand bag.