We had coffee available every day. Cookies were common as well, at least in the mornings.
Some banks give out doggie treats in the drive up when they see a pet in the car.
The database indicating bdays is a good one too. Just be careful a teller doesn't say something like "hey, this birthday check will cover your overdraft."

Some banks help sponsor trips for the senior club customers. This may be to another country, a local site of interest, the big city, sin city, etc.