Since I went back to work the mother of one of DS's classmates has done me untold favours - having DS to play/tea, taking him to after school activities / parties, etc. I did offer to pay her as she has been having DS after school once a week, but she refused. Since I am really not in a position to return the childcare favours in kind, I want to buy her some sort of Thank you present at the end of term - any ideas?