Two white plastic discs that rotate freely, each with two semicircular arms which again rotate freely.
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I know the answer but used Google Lens to find it… I don’t know if this is against the spirit of the place, as there’s no rules?
spoiler
It’s a pom pom maker
Edit: struggling with the spoiler tag.
spoiler
Pom pom maker
I had the same struggle! Also didn’t see your comment weirdly until now.