Finally cleaned all mortar and pestle sets. I use them rather than palette knives on palettes to mix paint. I seem to get smoother, more consistent, and more even colors that way.

These sets are from Romblon. They've become more and more expensive over the years, but I buy one or two whenever I see them. They are heavy and don't ever get knocked down, they feel good to the touch, and they can take the strongest solutions and the most vigorous scraping.