This is a great website with tons of information and games oriented to children. It contains a multitude of ideas that could be incorporated into speech and language therapy.
Speaking of Speech.com is a site for speech/language pathologists, special education teachers, parents, and others who support people who have communication disorders. This site offers message boards for the exchange of ideas and advice, an IEP Goal Bank, a Materials Exchange, and extensive list of Resource Links.
Awesome activities for speech and language tx... many are free. Here is a good place to find fun and helpful power point presentations for tx activities