i dont agree with everyone here. i was a counselor for 4 year old boys 2 years ago and the hardest kid in the bunks mother gave me 1 extra dollar and i still rememeber it. i think it showed alot- it was the mothers sign of appreciation. and this year i had an extremely hard bunk of 4th graders, and i think that if you write a nice note with it , it makes all the difference. i rememeber that we were going on a trip and 1 girl wasnt there. so i decided that its not the kids type to not go , so i called her mom to see whats the issue, and her mom said she just overslept and didnt know about the trip! bh” the girl got to the trip on time.
but the point of this story is that when she came to tip me she gave a very nice note on a full piece of paper thanking me for calling her daughter on the day of the trip. and many others in my bunk who couldnt afford to tip $15 gave me a very nice thank you card. good luck to you!