I'm very lucky that there's a pay what you can afford/think it's worth 'food bank' that you make a donation to in exchange for whats offered, that I can access, as I can't bring myself to register for help.
There's nothing like brazil nuts, chia seeds, or for that matter cheese or loo roll.
Plenty of junk food and drinks that we don't know how to use, and loads of meat and fish.
For vegans and vegetarians the options are porridge, a steady flow of random (damaged or de-boxed) cereal, cheap tea, and coffee, sugar, tinned veg, chick peas, beans and tomato's, soups, tomato sauce, pasta, rice, cous-cous, green lentils, eggs for those that eat them, occasional bread, whatever vegetables and fruit are past their best, and an odd selection of out of date yellow label food, that's been frozen. It can be an odd mix in terms of building a meal, (ie swede, turnip, tomatoes) but no one's ungrateful. If I found what we'd been able to pay had been used to buy in Oatley for another family, I'd be happy for them.
I'm happy to take vegetables that only have a day left, or pick out moldy bits, etc to help out, and I'm not expecting high quality food or brands, just anything we can eat that will keep us going.
I've been vegetarian since childhood, my dc's their whole lives, and I (not dc's) have gone without food long enough to know this isn't a 'principle.' The smell alone of dead fish and meat is vile to me. I'd have to be beyond hunger and into actual starvation before I could even think about it as a survival source.
Animals are no closer to being food to me than suggesting we all go and dig up earth worms and catch beetles to eat if we're in financial trouble. There are nutrients in them and other people do after all eat and survive on them, but I bet few people here would do it unless at starvation, rather than hunger, point.