Depends on the road you're going down. Basics. Good pair of oven mitts to move stuff around on/around grate. A Thermaworks instant read thermometer (priceless) and a Thermaworks large display timer. A set of good quality, stout, long handled tongs. Not a big fan of spatulas or forks. Grilling, not much more. Low and slow. Add a remote temperature gauge to watch grate and meat temp. A heat deflector for indirect cooking. I use foil, never tried butcher paper but has a lot of followers. Wood chunks for flavour. Not much else to start out. Start cooking and see what you like, learn from what you screw up, and try again. As you move down the kamado road a pizza stone and bag of corn meal is fun. Various types of wood chunks for different smoke flavour, test to see what you like. Don't go out and blow a pile of $ right at beginning, start simple and build over time. And most importantly a good coolie cup or insulated glass for beverage of choice while you learn. Best of luck and enjoy the ride:)