Suffolk CU's Youth Savings named the best by Newsweek.†
"The Youth Savings Account from Suffolk Credit Union offers a remarkable 6.00 APY% on balances up to $2,500. The account has just a $5 minimum deposit, making it easy for youth to open an account and get started saving."
†https://www.newsweek.com/vault/banking/savings/best-savings-account-interest-rates-new-york/