At the end of term my son's key worker at nursery is leaving (for another job). He attends 15 hours a week using the free hours. There is a collection for her. How much should I give without seeming tight? There is also 3 other nursery staff, do I have to get them something as well at the end of term? Is it expected from nursery staff to get something? What happened to giving a card and maybe some chocolates when I was at school.