Florida box turtles are a small turtle, with a typical max size of 4″-6.5″ SCL. They are best kept outdoors with a lot of room, with both a shallow water area and a dry area. Their diet is omnivorous but they start out more carnivorous (worms, insects) and then a growing tendency for plant matter (but not green leaves) as they get older.
Here’s a very short clip of some Florida box turtles from the 2009 New York Turtle And Turtle Society Annual Show:
(incidentally, this is also the last of the photos/videos I took from the show)