I made this set up for my Recycled Bowl art lesson at Camp STEM this summer.
The frame is an embroidery hoop with a sheet of felt as a filter.
Each set also has two plastic circles with holes. I have no idea what these are called, but I found them next to the embroidery hoops for super cheap and they are perfect for shaping and removing paper.
Here are some finished examples using this set up from the second session of Paper Power at Summer Art Camp at the Frist Center.