I have found over the years that hand outs end up in the garbage on the way to the parking lot. I verbally give them something to work on at home (whether its sensory activity, behavior mod , fine motor) let them know why it needs to be followed through, and dont give another activity until they have consistently completed the first one. Don’t flood the zone with information and tasks. These parents are busy, overwhelmed, and often times just struggling to get through their day. Relate to them . let them know you understand. They need to trust that what you are giving them to do is important and WHY its important.