Also bring along a "long" extension cord and a power strip especially if you have your class in a room other than a home ex room. My quilting quilt has a sew day usually once a year and we get together in a church basement. It's an older church and has limited outlets. Also bring along a 3 prong outlet adapter for use in older buildings. I try to go off in a space where I'm not right in the middle of things so it is quieter and more productive for me. But since I am the only one who remembers a power strip and extension cord I usually have lots of company - funny, and that's OK as I enjoy the company too. Enjoy!