I suspect something of plant origin - perhaps a seed bract or something along those lines? Hopefully a plant person will chime in here?
I concur that all things are worth investigating! We err more by making assumptions about something - I think curiousity is a better way to go... :-) Plus I could be wrong... What do you think @wcutler - is this plant matter?
Sorry, I'm not exactly a plant expert, and I have certainly never seen anything like those. I'd have assumed fungus as well.
I am happy that you confirm my suspicion which I told my wife this morning. It does look like something from conifer cones. Thank you.