New Smoother Air-Dry Clay Recipe | Ultimate Paper Mache. 1/2 cup wet toilet paper, 1/2 cup Elmer’s glue (or any white PVA glue), 1/2 cup (wet) drywall joint compound (any brand except Dap), 1/2 cup corn starch, 3 tablespoons mineral oil (baby oil), 1 cup all-purpose white flour, or as needed