I love this idea!
I’ll start us off with something easy. When I was growing up, we always hosted Thanksgiving dinner. Sometimes it was 8 (my parents, me and my younger brother, and both sets of grandparents), sometimes aunts/uncles/cousins (including one who invariably spilled something on the carpet and himself), and sometimes stray friends and coworkers. One year we had 25 and so the kids table was 2 rooms away from the dining room. Anyway, my mom always made sure that as guests arrived, there were easy appetizers out - veggies and dip, crackers and cheese spread, and Chex Mix. This was the 80s iteration of Chex Mix, not the horribly mutant version they offer up today. I still use this version of the butter/Worcestershire/seasoned salt sauce, though I now vary the dry ingredients (corn and rice Chex only, and gluten free pretzels, plus peanuts).