Without prompting from me, Mr 8 has been foraging really nice acorns and bringing them home to me, so I can make acorn porridge.
We peel them, slice them, and then soak them for days over many changes of water until they're sweet enough to cook and eat.
I made acorn porridge a year or two ago, and while I thought he was indifferent to it, it's clear that it left a positive impression. I'm really glad.