Cushion, etc to make the chair comfortable for you--usually won't be a sewing chair provided. Also snacks and beverage. The retreat location I go to won't allow extra irons as with all of using machines and our Ott lights, we blow the circuit breakers with lots of extra irons. Don't forget patterns for projects you are thinking about-you'll probably go to some shops. I always find fabric I crave and don't have my patterns!
