Oven - Ditto on the 10" DO for starters.
Lid lifter - Go with the Mair, as you have much better control with using it to lift the lid as well as move/carry the DO. Size is your preference. I first got the 14" as the 22" was way to long for a short person like myself to use without looking ridiculous. Then I came across the 9" & use that almost exclusively. Inherited a 22" but never use it.
Lid Stand - Not a necessity but I use mine a lot. Have even used it inside the DO to raise up a pan or pie plate.
Carry Bag - Again, personal preference. I have them for most of my DOs & love them. Don't particularly care for the Lodge ones as much as the Sportsman's Warehouse ones, which are padded & have a more rugged feel to them for a way better price.
Wooden Cutout/Trivet - I had Craig cut a circle of plywood to fit in the bottom of each DO bag. He also used a Forstner drill (spade bit works, too) to drill 3 places for the legs to sit in (Holes don't go all the way through the plywood). This serves 2 purposes: Gives support to the bag while traveling, carrying & like Jean's, can be used as a trivet for the DO if you don't have a place to set a hot DO.
Charcoal Box - I use a smaller Rubbermaid box with a handle for carrying. I line it with a kitchen size trash bag & change out the bag occasionally. Keeps things cleaner.
Tongs - A good pair of long handled ones (more like ones for a BBQ - not the short handled ones used in the kitchen) for moving coals around.
Gloves - Again, not necessary but nice for carrying, moving the DO around. If you get gloves, they need to be heavy. Welder's gloves work well.
Charcoal Chimney - Again, nice but not necessary. I made my own to start with but finally bought one as my DO cooking needs expanded.
Fire Starters - You can use lighter fluid but I am not a fan for a lot of reasons. Can also buy fire starters. I'm cheap & make my own & they are much easier to store.
"Stuff Bag" - I found a medium size brand new duffel style bag at Goodwill for $5 to store all the "Miscellaneous" stuff. Keeps things clean & if I really want to, I can always throw the bag in the washer to give it a good cleaning.
ID Tags - Especially important if you are part of a DO pot luck or are cooking with a group of people. Something simple as wiring an old key to the DO handle & to the lid, id tags (you can order these, get them at a locksmith, or there are machines in places like Walmart that will make them). Something that can withstand the heat & will remain intact so you can identify your oven & lid.
Lastly, there is the seasoning of a DO...there are a variety of opinions & techniques. Again, it's what works for you. I'm a huge fan of George's method & prefer using beeswax...that's a whole new discussion!
I acquired things over time, as I tried different things and borrowed from others. That way, I knew what I wanted/liked/would use.
