DIY Textured Roller for Clay Tutorial from Pottery Blog: Emily Murphy here. These are made using PVC pipe, empty tape rolls, Dollar Store rolling pins - anything round and then glue from a hot glue gun. You could use mini ones gently for polymer clay. First seen at Dollar Store Crafts here.
One of the people commenting wrote:
Having trouble laying down the glue on the roller, I cut wall paper to the exact dimensions of the roller.I laid the paper out flat, transferred a design to the paper, laid down the glue,and then wrapped the paper around the roller.I t was much easier for me to work on a flat surface. This way I can print out designs and then transfer them to the flat paper. This gives me much more control of the glue gun resulting in a neater design(s).