On a film set, nobody walks up to the producer at lunch and asks "so what are we doing next?" It's on the call sheet. Everyone got it the night before, it says who is where and when, and the whole day runs off one piece of paper that somebody sat down and wrote while it was still quiet.
Thanksgiving is a production. I mean that kindly! It has a cast, a schedule, a hard out (the minute you sit down), and a catering department that is usually you plus whoever wandered into the kitchen. The turkey is usually fine. It's the hour before that gets you, when three people are standing next to the stove asking what they can do, and the answer is somewhere in your head under the gravy.
So put it on paper, a week early, while it's still quiet.
Start here

Thanksgiving Hosting Kit, William Morris, $12.99. This is the call sheet. Who is bringing what (and how many it feeds, which is the question nobody answers when they say "I'll bring a side"), a cook timeline you fill in backward from the minute you sit down, a shopping list in six sections, and an oven column, because there is one oven and four dishes that all want 375. Then the pretty part: menu cards, place cards, and gift tags for the leftovers, so the containers that go home with people have names on them and you might get some of them back.

Thanksgiving Hosting Kit, Harvest Edition, $12.99. The same kit dressed in antique American quilts instead of Morris florals, if your table runs warmer and more autumn than rose and indigo.

If anyone is staying over, the Guest Room Printable Set ($6.99) covers the night before and the morning after: a checklist for the room, wifi cards so nobody reads the password off the back of the router, house notes for the thermostat and the spare key, and a list of your local favorites for the guest who wakes up at 6 and wants coffee before you do. Or start with the one-page Guest Room Ready ($1.99) and walk it in order: the bed, the bathroom, the room, the way in.
What's on my own table
Everything below is something I bought for my own fall and holiday table. Nothing here is a guess.
Pumpkin placemats, set of 6. The exact set I bought has turned into a Christmas listing, so this is the closest fall one. Amazon
Round doily placemats with pumpkins, set of 4. Yes, that's two sets of pumpkin placemats, and no, I'm not going to explain myself. Amazon
Blue and white Thanksgiving napkins, 100 pack, 3 ply. Paper napkins on a real table are fine, I promise, and blue and white looks a lot more deliberate than orange. Amazon
A gold cheese knife set with tongs and spoons. Amazon
Gold flatware, 20 pieces, service for 4. Amazon
A 2 quart glass pitcher with a lid. Water on the table means nobody gets up to fill a glass in the middle of the toast. Amazon
A marble cheese slicer. Mine is a wood and marble one from Crate & Barrel that they don't make anymore. This white marble one with a wire slicer is the closest I could find. Target
An organic cotton oven mitt and pot holder. Mine are Crate & Barrel's Arctic Reindeer pair, which sold out, so here's the set they have now, with red gondolas in the snow. Linens like these carry straight on into December, which is the other reason to buy them in November. Crate & Barrel
The week before
The kit's cook timeline starts two days out. Your week starts earlier than that, with the grocery run, the guest room, the person who needs a ride from the airport and the dish you forgot you promised somebody else. That week goes in the planner, one thing a day, so the Wednesday before doesn't turn into eleven things at once. The planners are here, dated and undated, if you want to start the week of the 23rd on a clean page.
And when someone walks into the kitchen at 2 PM and asks what they can do, hand them the timeline. It's on the call sheet.