50k sats is a lot of money. I would not play around with total noobs with that amount. Later you will always regret it because you gift them 50k sats (or worse if they bought them from you) and after a while they just forgot / lost the access or they don't even remember.
I will always say: be careful who you will onboard. BITCOIN IS NOT FOR EVERYBODY! Bitcoin is not for the weak, only for brave. Fuck the idiots, shitcoiners, fiat maxis etc. Onboard only selective people.
With small amounts, just to play around, any custodial can do it perfectly fine. If they lose it, no big deal. KEEP IT SIMPLE and let them come back later to you asking more questions. That's why I wrote this guide, for these situations: https://darth-coin.github.io/beginner/getting-started-stack-sats-en.html and more here: https://darth-coin.github.io/beginner/beginner.html
@remindme in 1 year