When teaching elementary school art, my students made these clay discs using a rich "red," terra cotta clay. Teaching the "principles" and "elements" of art, the lesson for this project was texture and variety, and since I had to "model" the lesson for every class, I ended up with a lot of these discs.
.Once clay was pushed firmly into a plastic lid, found items such as plastic forks and straws, water bottle lids, screws, bolts, i.e., anything with an interesting shape or edge, became the tools to create the textures. The discs were then glazed and fired in a kiln.
Discs are at least .25" thick, and range from 4" to 5.5" in diameter. A dark brown piece of faux suede rawhide is strung through two holes at the top of each disc for ease of hanging.
Use as an interesting entry door hanger, piece of wall decor or garden art ... many possibilities for a gem like this.