The Grange Bank is offering a special 5.65% APY 15-month certificate of deposit. The minimum is $1,000, and it requires money new to the bank. There's also a 5.55% APY 9-month CD with the same minimum deposit.
The bank is located in Columbus, Ohio. The website doesn't mention if the CD can be opened by mail. They do have a toll free number: (800) 270-8062.