There is so much available in many different areas. Lists can be found:
@ Association for Science in Autism Treatment, which you should check anyhow for invaluable information about "higher standards of accountability for the care, education and treatment of all individuals with autism"
@ Association for Behavior Analysis International (ABAI)
@ Different Roads for Learning, which you should check anyhow to find everything you may need to implement any kind of programming. From books to educational materials to toys to timers, and on and on and on.