Also, I have some money in the bank that is just sitting in the savings account.
That's where a money market mutual fund comes in (not to be confused with the so-called "money markets" your local bank has). I always like to keep about 3-6K in a money market account; call it an emergency fund, for unexpected purchases (say the frig dies, or i have a pricey home repair). Anyway, the return on a money market fund will always be superior to a savings account, by a long shot. And unlike a savings account, you can write checks on it.