Buy Canadian

Chapman's icecream was a recommendation from even before the recent events

Switching local grocery stores could also be reasonably easy (but the exact list depends on where the person lives)

My suggestions have mostly been more on the attacking the American market side of things, so:

1. Switching browsers, or barring that, the search function from Google to DuckDuckGo (and the browser to Opera if they're ready for that step.)

2. Leaving facebook/insta, but if that's not an option, following John Oliver's advice for making themselves less valuable: https://www.johnoliverwantsyourraterotica.com/

3. For skincare etc, Deciem/The Ordinary. For bulk stuff like deodorant, soap etc, looking for Unilever instead of one of the American conglomerates like Proctor and Gamble etc.