Damn I didn’t know Solutech went out of business. I like(d) their filament and still have a couple spools left.

You might have better luck with https://feddit.nl/c/trendingcommunities

!trendingcommunities

You may also be interested in:
!reuse
!freecycle
!thrifty
!frugal

Unfortunately Mozilla doesn’t seem to be opposed to the attribution, only the implementation. They have their own proposal called IPA:

https://blog.mozilla.org/en/mozilla/privacy-preserving-attribution-for-advertising/

https://github.com/patcg-individual-drafts/ipa/