Making a lattice to hold your dripping beads is as easy as going to the supermarket and getting a package of bamboo bbq skewers and interlacing them. No nails, no glue, nothing but weaving them in and out. They are stuck into wads of aluminum foil and it's all in a banker's box top turned upside down.
Put a bit of liquid dish soap in your sanding water to keep the clay dust off of the sanding paper.
The recycled shoulder pad is there to give things a soft grip behind the sand paper.