I know there are many ways to smoke oil. But is there a bowl made for this purpose? I would imagine that it would look like a normal bowl, but instead of a hole at the bottom in the bowl, there would be like 4-6 small holes on the sides of the bowl. No hole at the bottom of the bowl, the oil would just sit there. Would imagine it would be made of pyrex. Let me know if there is something similar to this. And if there is, does it work well?