@anakvad
At first I wanted to do this in an automated way, but the task turned out to be more difficult than I thought. So for the moment I just collected everything from open sources, as I think others have done, so the results will be duplicated.
In general, we can use the OpenSea API to get collection descriptions and search there for CC0 traits by keyword or via LLM. The list of collection names to search for can be uploaded from Dune. I can do it, but not for merch :).
https://docs.google.com/spreadsheets/d/1BEk-kiqSbHEDG3UE0W1Xn1GCzesGXXOVKzUimH_6Oa4/edit?usp=sharing