Personally, I'd just have them buy gold since they are 80. I love the sweet corn, but at that age, it's a lot to handle. Gold will treat them well and give them a piece of the action.
An 80 year old family friend called me for financial advice because her kids wouldn't "help her buy crypto"
I'm advising her to buy $100 of Bitcoin on nostr:nprofile1qqsrtv3u6qkj6a09tnhr3l0wy67g9uw3t57ftqyqpvztpk3wmd6306spp3mhxue69uhkyunz9e5k7qg4waehxw309ajkgetw9ehx7um5wghxcctwvsueqn9x, giving her nostr:nprofile1qqsxc56ajk5xtxerf4dqspgrfa0s5elrcr80lnz9nasldq87j3zzf0cc5h4hk's The Big Print and telling her that after she reads it I'm happy to help
What would you do?

Discussion
They asked me specifically how to do it so I feel like if I don't help them someone who will steer them into crypto will.
Plus I gave her a book by someone who is a gold bug too