A lot depends on how long the child has been with me. Since many preschools and daycare centres do something for the children that move on I started doing the same. I have a certificate from a mailbox magazine that says congratulations on completing preschool. I just run it off on their favourite colour of cardstock and put it in a page protector to send home. In the Story Time Felts that I sell there is a set that is about going to school and I usually give that to the child if it is a girl. If it is a boy I sometimes don't depending on the child. As far as a gift goes a book is never a bad choice. Not all children have a lot of books at home.