Jack Bogle would have you park it in a balance of broad index funds, and generally don't touch it, nor even think about it:
https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_...
https://www.investopedia.com/articles/investing/030916/buffe...
So, if trying to steer people away from obsessing about growing/hoarding more money than they'll ever need... maybe just steer away from Buffet altogether, and towards Bogle.
(Bogleheads can also become a time-consuming activity, but more likely to instill the message of just stuffing it in total-market index funds, keep it boring, and don't think about it.)
On the other hand, it's exactly this attitude that's resulted in my spouse handling all of our finances. Maybe she wakes up at 4am fretting about the stock market; if so, she doesn't tell me about it.
His argument is that since stock generally goes up, if you're not constantly checking, when you DO check it will be higher than it was before and you'll feel positive about it.