When I was 11 years old, I had about $100 in a typical passbook savings account at the local bank. We were moving from Pennsylvania to Delaware and my dad had opened a savings account in Delaware to accumulate enough money to pay cash for the new house, about $40,000. (This was 1975.) When we moved, we closed my savings account and had to open a new one in Delaware. The one my dad had been using had about $100 left in it, so he had me sign over the check I got from the old bank to him and he re-named the ownership on the savings account to me. In those days, interest was deposited every three months, and when that happened I went from having $100 to over $250 from the interest on the previously much higher balance.
My dad was pissed and tried to get the money, but my mom insisted it was my account and I should keep it.