Give them uBlock Origin? It's free, and as far as I'm aware removes (as in: makes them invisible) all FB ads including the sponsored posts or whatever it's call

Give them uBlock Origin? It's free, and as far as I'm aware removes (as in: makes them invisible) all FB ads including the sponsored posts or whatever it's called in the timeline. Technically not the exact same thing as not being served ads in the first place (which presumably is what you'd be paying for), but still, worth it.