I'm sharing another tool I wrote to make playing WoW more enjoyable. CraftUI shows which recipies and/or tradeskills a particular crafting reagent is used in, right there in the tooltip.
Also, it allows CTRL-clicking of a reagent to search for it in a tradeskill window.
I made a slight mistake in the .toc file for the first version of this AddOn - if you got an error to do with SafeHookScript when loading the UI, the new version should fix it.