1). Sharp utensils of stabbing and cutting (scissors and awls, and a fairly large needle)
2). Paper: it should be not too heavy because this is a small sketchbook
3). Leather: color and thickness don't matter too much
4). Wax thread, but embroidery thread should work
5). Hot glue gun (and glue)
6). A straight edge for ripping paper and some cardboard
whew! now let's get started!