Techniques and tools that I've found useful in practice.
From time to time I also recommend books and other products.
Reward Chart App
From the National Autism Society (UK)
Indicating how long an activity will go on for
A great toy
A brilliant book for explaining to children that they have autism
A lovely book to help children with autism make friends
If your child likes the Sesame Street games then they will love Treehouse TV
Indicate how much effort to put into a task