I'd support that, too. Why not write him a letter? (n/t)
Actually, a passbook savings account is a crappy place to keep money at today's interest rates, although some CD-type accounts are better than nothing. Not the good deal they were when I was a kid, and most banks will eat your account with service fees if you're not careful.
My kids' money is in a non-IRA brokerage account, mostly in unexciting money market funds. The interest is still taxable.