They recently implemented a feature in game where if you interact(right click) with the item in your inventory one of the contextual options that pops up is to search for recipes using that item. I havent played around with it much, so i dont know how extensive and useful it is. If you want something outside of the game, check Garlond Tools. In the "data" tool, you can search for any crafting mat in the game, and itll list all the recipes its used in. For instance, i searched Gigantoad Skin. Its only used in toad leather. But then search toad leather, and youve got 51 recipes - any of which you can click on and see what other materials are required(and for most of them, where to get them). Might fit your needs.