Below is some research you may find useful, along with some tools.

 Henry needed three things: a task chart to keep him remember things, a calming key ring that has two different tactile sensory tools (pipe cleaners and beads) to help with his anxiety, and a stress ball to squeeze to help him remember when to stay still. All children need different things at different times to help them in the learning process.

This is just a short list, but there are so many resources available to families that I hope this is useful on your journey!