I would like some ideas on what I could get a teacher, an EA and an ECE as gifts?

My sons has Aspergers and he has the most amazing teacher, ECE an EA. They help him so much and are so fabulous with preparing him for change etc. I cant even begin to tell you how much they have changed our lives. Do you have any ideas on gift ideas. I haven't that much money but really want to get them something. They are all female if that matters. The year end is approaching and I would appreciate any suggestions you may have. thank you