What holidays and objectives have you guys created?

I added a Summer BBQ day, Spooky day and also I split Winterfest into two days so the first day is Winterfest eve where sims decorate, bake and father winter visits. The second day they open presents, have a grand meal and some other objectives that I've forgotten without checking. :D I don't really know what else to add but I would like to add more holidays.