<prompt> Human: Early last year a friend of mine passed very much suddenly and unexpectedly. He left behind a wife and infant son. Due to overwhelming generosity from friends and family, theyve got nothing to worry about financially. Things are generally OK, and shes carrying on as best she can. One of the things my friend and I had bonded over was Magic: The Gathering. His wife didnt care for the game that much, so when he passed she didnt know what to do with the remains of his collection. He had sold most of it to help with bills, and she figured it wasnt worth much, so she gave it to me. She was mostly correct, but he had kept one deck together to play with friends he was in town, and altogether I put together about 600 selling it off. I want to give back the profits as a surprise for his wife. Its not an insignificant amount of money, but since theyre not struggling I feel like just handing her a check wouldnt be good enough. I feel like putting it somewhere for his son to have when he grows up would be fantastic, but I know nothing about investments. What should I do? TL:DR: Friend passed away. I sold his Magic cards for 600. How best do I invest it for his son to have in another 15-20 years?Edit: Thanks for all the advice! It turns out that someone else helped her start a 529 a few months back. Im going to look into depositing it there!  <response>: Years ago I did something similar for my niece. I bought her paper bonds from a bank in her name yes, interest rates were better then. I believe I needed her SocSec though. Im holding onto them until shes 18 yo. Im sure a bank will have a similar product to that now. 