Nuttelex is the gold standard dairy free margarine but for cheap bulk option the Coles ‘regular spread’ is also pretty safe for me. You can also do as Italians do and dip the bread in olive oil.

There is plant based protein powder from Nature’s Way but I don’t know if they still sell the unflavoured variety (which I preferred since it doesn’t contain artificial sweeteners) and it doesn’t have any added vitamins or anything. I know they do have flavoured varieties like strawberry or chocolate.

Bulk Nutrients probably has vegan meal shake options but from what I remember my other intolerances precluded them so I don’t have any specific options to recommend