I never was one for spending a lot on my children’s b-day parties, except Skye’s sweet 16 (also done with a budget, though). I always bought cheap ice cream and made a homemade cake. I usually used our household plates, cups, spoons and forks, even when we had a dozen people there. I would also purchase a 3-liter of soda.
My mother would bring paper napkins, and sometimes dad would bring paper plates and cups and plastic silverware. My sister would always bring chips and dip.
Other than a gift, I wouldn’t spend anything else. I didn’t have to. My children loved having their friends and family around, and cared nothing about games, goodie bags and such.