There are many uses for the Ablative Case in Latin. "Ablative Insanity" is an in-class game that reviews many of the most common uses for the Ablative Case. It also includes a worksheet that can be assigned for homework after the game. The worksheet has the same questions as the game, so the students are "primed" to answer correctly, but will still have to think the answers through.
The rules of the game, as well as the questions and answers, are on page 1. The worksheet, to be handed out any time after the game, is on page 2.