re: Dad needs help investing a high school graduation gift.

Stash or Acorn account and give them a couple of hundred to start investing. Also, I gave my kid an Uber app with my credit card attached when started school. I promised that as long as they used the card instead of driving I would never ask questions. He used it a few times his freshman year. A few more times as a soph. Once as a junior and none senior year. Overall probably costed me $300 max - but no DUI’s or accidents paid for itself... and he was very thankful.