http://bogglesworldesl.com/voweldigraphbingo.htm
If you have some students who are particularly struggling with pronunciation, here is a link to a great resource which generates bingo cards. All you have to do is follow the simple instructions and print as many bingo cards as you need for your students. Put the base words in a bag or folder and have the students match the sound to the words on their card.
To make it a bit more difficult for higher levels you could cut up phonemes and have they memorize the sounds...then play bingo!
Rosie