Thank you for your suggestions.
Gutmutter, my default Pot Luck contribution is Devilled Eggs, so you've got me pegged. I actually make a darned good DE, with minced onions, chives, parsley & paprika & a touch of horseradish.
My problem isn't that I'm a bad cook, or that I don't know how, it's that I hate doing it, with the fury of a thousand forest fires. I hate the time, the trouble, the mess & the cleanup. I get 0 pleasure from it & have next to no tolerance for it.
The plating idea is a good one. My problem is that where I live there's no Costco, no Whole Foods, no Trader Joe's, no deli or caterers to buy semi-home made foods. I live in an area with pretty sparse selection. My only choices are local grocery stores like Safeway's, Albertson's, Smith's, IGA, or Walmart Grocery. Even their deli departments are a little meager & basic. I'm sure I can find something decent, though.
I also like the bakery desert idea. One thing we do have is some decent bakeries.
I've volunteered to bring beverages, & other non-cooking items in the past, but sometimes like this last one, there's really no person to contact. No contact phone # was given. Just a group invite from the organization to show up with stuff.
You're probably right that there's a lot more plating going on than I realize.