Acorn flour, nuts, oil...
https://www.youtube.com/watch?v=eGxQPFXoicY
https://www.youtube.com/watch?v=iI3IsfXPkBc
Other oils I can recall offhand are walnut, birch, and pine.
Lets not forget about pine and spurce resin which can be melted and used to make candles.
I think we need to flesh out a wild existence a bit more.
