You must have at least one free motion foot. Snippets left over from other quilts are fine. You won't need a large amount of any one fabric, but you will want plenty of choices to play with. Metallics, foils, or anything else you can sew through will add to the fun. Black, solid dark, or low contrast painted fabrics always work well.
Black tulle is always the most popular choice.
Those sleezy chiffon skarves that are sold at Walmart are the best. They're only available in Spring and Summer in most parts of the country. Rayons, metallics, and variegated threads can be included but using them will not be part of the class instruction. Heavy duty Extension Cord with two outlets.