Hello to all, glad to be here. I have a sort of general question about the construction of a small, rod shaped, battery powered (2 9volts), heating element, that will keep approximately 4 ounces of fluid at a steady temperature between 95 and 100 degrees Farentheit. The heating rod will need to be submerged in the liquid, so does that rule out most available materials? Furthermore, the rod will need to be 4-5 inches long max. For any of you MacGuivers out there, all suggestions will be greatly appreciated! I have the exact image of what I want in my head, but have no Earthly idea on how to create such A device. If you're pondering on what exactly I do have in mind...just check out the heating elements included in all "Urinators" products.