The Elder Sign is one of the only things known to man that can provide any measure of protection against the Deep Ones. I felt it would be prudent to make one, considering the reading we will begin tomorrow.
However, most of us do not have a chunk of granite handy, or the necessary tools (or skill) to carve it, so we must make do with a crude approximation.
You will need oven-bake clay like Sculpy or Fimo, and a tool to etch it (even a toothpick will do). As you can see, I’ve used a type of clay that looks a bit like stone when baked – for that authentic Innsmouth feeling.
The method is simple: break off a small stone’s worth of clay from your brick and roll it between your hands and against a hard surface, kneading it until it is pliable. Form it into a rough stone shape (or a flattened pebble shape, if you prefer a pendant), and smooth its surface. Carefully carve an Elder Sign into it, removing excess clay as you go. I have used the simpler Lovecraft version here, though those with greater artistic ability may attempt the more complex Derleth version.
You may mutter a few incantations of protection over your clay before you slide it into the oven, but then bake according to the package directions. Allow it to cool thoroughly before handling, then enjoy your new ward against the Deep Ones.
You may well need it before all is said and done.