In the Midwest of my long-ago childhood there was a concoction sure to turn up any time relations from out of town came to visit. It went by various names---Overnight Salad, Overnight Dessert, Flapper's Delight, Cream Fluff Dessert---but basically was whipped cream, marshmallows, and canned fruit with the juice. As it sat a day or two in the refrigerator, the marshmallows sort of melted into the fruit juice. Every cook put her spin on it---some added a boiled dressing, some added torn-up sugar wafer cookies, etc. It harks back to the 1920's and 1930's when having an electric refrigerator was a prestigious thing and one showed it off by serving fancy jello salads and refrigerator desserts. I see in my grandmother's handwritten cookbook that recipe variants were passed along and recorded with the cook's name, eg Mae's Ovenight Salad. Does anyone else remember this stuff?