The other postings have already given you some great ideas. I want ask if your child is in kindergarten or will be entering next year, because as a teacher who has one diagnosed student in the class with SID and a few others who have undiagnosed sensory issues, I believe it is very important that the teacher has some understanding and empathy as to what sensory issues can mean to a child and to the dynamics of the classroom. With that said, be sure to talk to the teacher when you learn some tools that help that you can pass along. Most of the time we are so busy, we don't have time to read or research these issues (I did some research, because it was interesting to me and I had so many students who seemed to be sensitive), but we are willing to implement activities and tools if they are given to us.