This should have been made long time ago, what does it do? The most epic thing ever; makes sure that you put your Chef's Hat on before cooking! Too long have we suffered having to manually put it on and off, now you can let the addon do the work for you. All that is required is to use the default TradeSkill UI (or to use an addon that has added support for this addon).
In any case, you are welcome! Sorry that I had no pictures to show, it's not like there is much to it, when you mouse over the craft buttons it puts it on, when you close the window it puts on your original item.
Not guaranteed to work flawlessly, requires more testing on my end. Thus, do from time to time check that your head is on before doing a dungeon or raid! Theoretically tough it should work flawlessly, but you know how it is with theories.
+ Updated for MoP, mostly TOC bump update.
+ Ninja updated with a small fix: forgot to check that Cooking tradeskill is actually shown, but now I do!