For a few years we were able to go (us kids only) to my paternal grandma's for a Christmas celebration. It was fun. We'd sing carols and eat treats. Both grandparents always gave us gifts, too. Even though my dad was not a JW, he never celebrated, though. My mom always said it was because he was too cheap to buy presents which is why he went along with no Christmas.
My dad did always buy my mom a birthday gift. She hated it and would make fun of his gifts. Us kids never got any birthday acknowledgement from either parents, though, although as an adult my mom would always call or send me a message telling me my birthday was the happiest day of her life. At her funeral they announced that the happiest day of her life was when she got baptized.
My mom also always made a non-holiday turkey at xmas, thanksgiving, easter. And of course anniversary celebrations were always big. Talk about mixed messages.