I know how hard it is to have a child that is having a severe meltdown while you are on the outside not knowing how to help. A friend of mine has been managing this exact situation for the last 9 years. Along with a child with SPD, she is a homeschool mom of 4 and owns her own online business. In her blog she has several resources that are very helpful! Here is a list of fun recipes for different play-do and clay.