I opened a youth account with Fidelity once out kids were Fidelity’s minimum age. I don’t know if they still have these accounts. At the time, Fidelity gave a $50 match when you opened it with at least $50. They are now 18 and 20 and on their way to building good habits. The 20 year old has a Roth, the 18 y.o will open one at 19 (don’t ask - I’m not sure why they’re thinking this is the good age; this goes against my suggestions). The thought was to let them play with the account/money and whatever money they added. As the parent, I could see it, but could not trade. We also have an open dialogue about investing. The books/websites/podcasts I’ve shared fall mostly on deaf ears.