A set (8 pieces) of unused cargo blocks for VWs. They can be used in any car trunk that has a fabric floor as these blocks have velcro on the feet to hold them in place (note then, that they wouldn't work on rubber mats).
Google AI says:
Volkswagen's CarGo System is for organizing and securing loose items in the vehicle's trunk or cargo area, preventing them from sliding around and protecting the interior from spills, dirt, and damage. It typically consists of adjustable, interlocking cargo blocks with a hook-and-loop base to secure them to the trunk's carpet, allowing for customizable compartment sizes for groceries, luggage, and other everyday items.
What the Volkswagen CarGo System does:
Organizes cargo: It provides a flexible way to create smaller compartments for various items, stopping them from shifting during transit.
Secures items: The interlocking blocks create stable enclosures, keeping items like milk cartons, books, and even small bags from moving around.
Protects the interior: When used with a trunk liner, the system helps contain dirt, spills, and stains, keeping the vehicle's cargo area cleaner.
Enhances stability: By grouping and containing items, the system helps to keep them stable and in place.
Customizable storage: The adjustable nature of the blocks allows you to arrange them to fit different shapes and sizes of belongings.
More info in the following links.
https://fb.watch/C5M4-hhwHk/
https://www.reddit.com/r/GolfGTI/comments/euvpc6/thought_these_cargo_blocks_would_be_stupid_and/