Every avid joint roller must have at least two things to get the job done. Those things are the rolling papers or cones to roll with, and the materials to roll inside the joint. But one item that every roller definitely should own is a rolling tray. Yes, you could use a magazine or a tabletop, but then you have to deal with any mess left over. With a rolling tray, you’re able to keep all of your contents in one place for easy cleaning.