-Treat your nanny to breakfast or a BBQ made by your family
-Give her and card and/or framed photo of the children
-Encourage your children to say Thank You!
-Give him/her the day off
-Gift Certificate (Starbucks, Borders Books, Coffee Bean, Manicure, ect.)
-A special dinner at home or out
There are MANY other things you can do do some appreciation toward your nanny, this is just a start.