Full question: We are looking for playdough, paint, crayons, and other sensory play guidelines for a young person in preschool setting. Do you have any product lists or guidelines?
Response: The risk of ingested carbohydrate is the greatest concern with using manipulatives and art supplies for children. For example, is not known if the carbohydrate from playdough can be absorbed through skin and affect ketosis however the risk is in the event that the child licks his/her hands while playing with it. There is a non-starch based playdough called plasticine. We are not aware of paints that are carbohydrate-free. Crayons are made of parafin wax and color pigment which may contain carbohydrate. There is likely little risk in holding a crayon during drawing since there is no residue from the crayon that is left on hands, particularly if the crayon is wrapped in its paper label; the risk could be in the eating the crayon. You should avoid using food items such as rice, pasta and legumes for manipulatives in the event that the child decides to taste them.