If you find that you only have kosher salt on hand, you can grind it down using a mortar and pestle, two spoons or anything that you can think of to get a finer salt grain.
Emblem ideas include (but aren't limited to): a happy tooth and brush, an ambulance, a baby with a teddy bear, baby items, handicap symbol, pill bottles, mortar and pestle, stethoscope and syringe, a teddy bear nurse, and more.
Try grinding nibs in a mortar and pestle or spice grinder, mixing them with chili powder, cumin, paprika, pepper, salt, or other spices, rubbing the combination onto veggies, and grilling or roasting them.
Even the Calaveras man is no exception, since his skull and his polished conical pestle, the latter made of stone more recent than the auriferous gravels, show him to have been of Digger Indian type.
Picumnus, a rustic deity (like Picus) and husband of Pomona, is specially concerned with the manuring of the soil and hence called Sterquilinus, while Pilumnus is the inventor of the pounding of grain, so named from the pestle (pi/um) used by bakers.