Maybe a new rotary cutter blade .. I like to have a nice fresh blade when I am taking on a new big project. But the essentials for Paper piecing is the fabric , and paper. Plenty of free version of the New York Beauty block on line. Oh maybe a new ruler, some like the add a 1/4 inch ruler... for paper piecing .. I don"t find it particularly handy but many like it.
Just have a great time at Paducah! Maybe stop at the Quilt in a day store as well , they posted a big sale .