I have a friend whose birthday is today, and if the snow lightens up, I'm making a giant sunflower brownie, and maybe a pizza.
One of my friends birthdays is new years eve, so we generally keep it small, I make cake, ice cream, I make mudslides.
My son's is in two days, and I am doing simple cake, ice cream, pizza, maybe some punch(if the fruit isn't too crazy expensive), and his new movies. If I can get it all cleaned up in time, playing all my old records(all my friends are vinyl fans, so it's fun).
Keep it simple, as so many people are burnt out on the excesses of Christmas. If for a child, simple and small, or make it themed for Winter or New Years party poppers and noisemakers, with a cake with "sparkler" candles(that are actually the magic relight ones that sparkle), and edible confetti all over.