Booze and/or wine. Dog food. Energy bars. Sting cheese. Frozen berries.
We are not good shoppers.
Most of the above, actually. We generally keep a fairly stocked pantry. But if it was up to me to make the dish, I’d probably go with the Ro-Tel dip or the spaghetti casserole.
But only because I’m married. Back in my bachelor days I’d usually show up with a block of cream cheese, a bottle of Pickapeppa Sauce and a box of Triskets.
Very little at the moment, since I’m on vacation at a writing workshop, which has mostly been catered.
I picked up a few supplies at the village market: dry pasta, tomato sauce, chunky beef soup, packaged donuts, and chocolate. 
Brownies or Snickerdoodles, potato salad, pasta salad, deviled eggs, something with Trader Joe’s turkey meatballs since I just bought a bunch. I also have everything ready for Aian chicken salads we’ll have later that I could bring, but if I hadn’t already baked the chicken it would take longer than an hour.
Uh… a bag of potato chips?
deviled egg , potatoes salad , pasta salad . Have some pizza & chicken wings delivered to the person house
Huge pitcher of vodka gimlets
Homemade brownies with peanut butter chips
Bag of Wavy Lays and store-bought onion dip
Mmmm . . . I think I’ve just planned supper! Where’s the latest **What’s For Dinner **thread?
The better question is Why hasn’t Proudest Monkey invited me for dinner yet?
Scalloped potatoes. With ham.
Enchiladas
Macaroni and cheese
Macaroni and beef
German Chocolate Cake
Brownies
Snickerdoodles
almond muffins
All I really need is the energy to get off my butt and make it. 
I just defrosted the back porch freezer and did a quick and dirty inventory. I could bring a lot more stuff than I thought: ham (maybe not tomorrow night, though, since it would take a bit to defrost, but no real work involved in preparing it,) country-style ribs, sausage balls (really?! Nine “tubes” of breakfast sausage?! But, as I recall, it was on special for $.75 for the good pork/bacon stuff, so I stocked up,) red beans and rice with smoked sausage, 'most any chicken dish except Buffalo wings. Something with fish, since I seem to have 14 pounds of talapia, swai, and flounder, plus a few pounds of river trout courtesy of my brother, or a venison stew, also courtesy of my brother. (His freezer was full, so he shared the wealth.)
The t-bone steaks are mine, though! (Actually, in reserve for a dear friend who just got some news worth celebrating. As soon as he says the word, he’s the guest of honor for a steak dinner.)
Man we really need to have a doper potluck.
Just bought a flat of strawberries so the wife can make jam. How about strawberry short cake?
Just about any hotdish (what can I say – I’m Lutheran ) you could want. I always keep the freezer well stocked with assorted tasty critter-flesh and a fair bit is already cooked. Some odd veggies (canned or fresh depending on the day) and a hour or three or so and I would be ready to go.
Deviled eggs
Molasses cookies
Chocolate chip cookies
Oatmeal cookies
Blueberry pie
Rhubarb pie
Chocolate cake
Banana bread
Meatloaf
Right now, I’d hape to hope y’all like pasta in tomato sauce. The sauce is from a bottle. I can also offer dry sausage, or a variant on Aragonese salad (the original recipe calls for penne pasta and chorizo, I can make twirls and dry sausage)… but I’m in an apartment that’s always been temporary acomodation, and have only four more weeks of being there.
At other times I’ve been able to offer fried chicken Madrid style (pollo al ajillo), lazy salad (tomato, tuna; olives, hard-boiled egg and onion are other possible ingredients; I’ve also encountered it with capers but I usually don’t keep capers) or potato omelette (with or without onions) without trips to the store.
From a non-native speaker of American English who grasps the correct use and spelling of “y’all?” You can bring whatever you want! I’m impressed! (But I have no major objections to bottled tomato sauce. Like Velveeta, it has its place - assuming it’s not one of those brands that’s half sugar! Who wants a dessert pasta course?)
Gnocchi with gorgonzola sauce, pesto, or garlicky tomato sauce.
Chicken breast, cubed, with gorgonzola.
Ikea meatballs with tomato or evaporated-milk sauce.
Roasted potatoes and onions with or without gorgonzola.
Any bean (hooray pressure cooker) or lentil dish like a lentil salad.
Cornbread with or without butter & honey
Cans of Bush’s Vegetarian Baked Beans.
Homemade coleslaw.
Deviled eggs.
Garlic and onion socca, cut into small portions.
Mini biscuits with jam or honey.
Something with ground beef, but I don’t have anything with ground beef in my potluck repertoire (potluck repertoire before this post included only 2 items; who knew?). It could include a block of cheddar and/or Anaheim or poblano peppers. Dip?
Bread pudding.
Some kind of cookie, with or without oatmeal.
I have all the makings for macarons, but the likelihood of that happening, even with early warning, is approaching zilch.
Hummus and/or olive tapenade with bread machine-begun bread.
Pecan pie (I think I’ve still got enough pecans in the freezer)
Cookies (chocolate chip and/or oatmeal)
meatloaf
cornbread
Let’s see…
3 pounds of butter.
A couple sleeves of Ritz crackers.
4 tomatoes.
2 bananas.
A pound of coffee and two thermoses. Bingo!
I gotta get to the store…
Oddly, everything I can think of other than chili requires one ingredient that we either don’t have (usually something fresh), or that we are short on at the moment (cheese).
For example, we could probably crank out something like a King Ranch Chicken casserole, but it would be somewhat bastardized with canned jalapenos and green chilies instead of roasted fresh ones, and the cheese on top would be pretty sparse, and probably a mixture of cheddar, mozzarella and grocery store “Alpine style” cheese (gruyere wanna-be).
I think we could crank out chili without much trouble, and probably a pan of enchiladas without much trouble- we have tortillas that I think are still good enough, and if not, we have a sack of masa and a press. We have ground beef. We have chili powder, ground chilies, cumin, garlic, and just about any other spice you’d want. I bet if we needed to, we could scrounge up enough potatoes and frozen mixed veggies to do a passable Shepherd’s pie as well.
We could also do chicken or tuna salad- I know we have celery, olives, sweet pickles, onions, dill and both chicken and tuna.
Baked goods would be easy- we could do rosemary/garlic breadsticks, chocolate chip cookies, molasses cookies, probably any number of cakes of various kinds, sugar cookies, oatmeal cookies, etc… We could also do multiple pies- we have various fruits, sugar, and for the crust, we have a block of lard and a bunch of AP flour.
We could also do rice pudding no problem, and likely tapioca (I think we still have some). We could also even do a small-ish bread pudding, with a quarter-loaf of pain de levain, and some leftover hamburger buns from last weekend.