I was raised a JW from the age of 4. I remember one Christmas and 2 Halloweens, and a couple of birthdays.
I don't have a problem with any of it now. My children are all very involved in holidays for their children, so, not wanting to be left out, we decided to jump in too. I admit it felt funny at first, 8 years ago, but not now. No one does anything for Easter, maybe because we just aren't religious at all, and that one seems pretty churchy.
Birthdays were never a problem for me because our entire extended family always recognized birthdays, and sent funny cards as a joke. No one was offended and everyone knew we were being silly about it, and ribbing each other for getting older. We didn't do that for the children, so as not to "confuse them". How dumb is that? I always told my kids "Happy Birthday" on their birthdays, and I don't think a year has gone by since I left home, that my mother hasn't called me to wish me a happy birthday. My father did the same, until his mind failed him.
I take my JW mother (93) to lunch on her birthday every year, and she looks forward to it very much. I buy her Mother's Day gifts and birthday presents, which she accepts too. When we were all JW's, she would often say she wished we could celebrate Mother's Day because mothers deserve a special day. I guess she still feels that way.