Is a wine glass a tool? A whiskey glass? A cake plate? Sure, in a sense. It's attitudinal, but if you use an object to attain a desired result, I guess that makes it a tool. However, if I were asking, I wouldn't ask someone to bring me a tool off my pipe rack unless they were in on this discussion, so as a communicative point, that's not the word I'd use. I think a cook might get a cooking tool, something with a handle, but might not think first of a skillet or sauce pan that way, at least in requesting it be handed to them. But yeah, they're tools in a dictionary sense. Language fun.