Backward Spelling
From TEFL World Wiki
Backward Spelling is a simple game you can play at the end of your class to fill up a couple of minutes before the lesson ends.
It helps with concentrated listening, vocabulary and spelling.
Simply choose a word which the class will know and begin - slowly - to spell it backwards. Award a point to the first person who can guess the word correctly.
T: A - N
S1: Can?
T: Sorry, no! A - N - A - N - A
S2: Banana?
T: Good! One point for your team!
Of course you can expand the options here and have students in teams giving words to the other team and so on.

