Every family has their traditions. The things that make the holidays particularly memorable to them. When it comes to Thanksgiving those traditions almost always revolve around food. What graces the table is just as important as who sits around it. While some people may choose to experiment from year to year some things just aren't allowed to change. Usually it's a side dish. Sometime it's not very healthy or even classy, but it must be made.
In the case of my family it's Jell-O Salad. It has graced our holiday table for as long as I can remember. I have tried to trace the origin as it is distinctly American and probably a recipe that came from the company itself. It certainly is not something my very Polish grandmother would have created on her own. She was an expert baker and this is just too pedestrian for her talents. The closest version I came to finding online had it published in 2000. That's about 30 years too late. That version also included walnuts, which just sounds gross. They would totally mess up the the smooth, melt-in-your-mouth texture of the dish.
I can only imagine she started making it to placate the unrefined palates of her four young grandchildren. I mean, who would ever pass up Strawberry Jell-O with bananas. It seemed more like a dessert than a side dish and added a little sweetness and color to our plates. Even when we were older we had her continue to make it, because it just wasn't the holidays without it.