My daughter Carrie decided to involved my grandsons, her nephews, on an adventure similar to one she had as a child. When Carrie was 14, our family was on a vacation in California and we were driving up the coast to SF. We got to Carmel later than we had anticipated and it was past dinner time. I suggested that, instead of having a late meal, we would have dessert for dinner; junk food only. And, so we did, and it was so much fun.
Carrie arranged a junk food meal for Isaac and Ari. They loved it.
She is a fabulous aunt.