It might ruin the fun for you, but if you really need help gathering an item, this application is for YOU! INVedit allows you to edit your inventory. It was not created by me! I believe it was created by copyboy here. There are plenty of features such as:

-Add, edit and remove enchantments on items.
-It is possible to give any item any enchantment with any level.
-Loads blocks from the enclosed files.
-This means anyone is able to update INVedit themselves or add items from mods.
-Groups for faster access of individual blocks.
-Search box lets you filter items.
-If possible, displays item damage as bar.
-Stacks items almost like in the game itself.
-Tabs for editing multiple inventories simultaneously.
-You can move items between tabs.
-Quick load and save.
-Automatic updating.

If you need any help on how to use the application go here.