This is off-topic, but I’m really curious: What happened that an 8-year-old is getting a $30,000 settlement? If you don’t want to tell us, I understand… But I thought I’d try.
To triple it in 10 years you will need to get about 15% per year. That is going to be hard to find. Yields like that are possible with equities (stock) but they are risky.