Walnuts are in season now in the US and canada. Just buy some walnuts. Or you could buy cold-pressed walnut oil at about $8 for 13 oz and flavor nutbreads and nutcakes with it, instead of using flavorless oils to them. Or you could munch it by the tablespoon full -- delicious on cold cereal or warm porridge.
ShakaHara: Sanskrit for vegetarianism. Shaka=vegetable. Hara=consumption, eating. With perhaps a few exceptions, I think we should be able to live well, without animal husbandry. Both plants and animals need to be fed. Although peas are naturally carnivorous, they can be fed with green manures, turned in cover crops, and composted plant matter; animal matter is not needed.