TooManyItems

TooManyItems is a mod created by Marglyph (on the Minecraft forums). The mod allows you to edit your inventory in game (unlike INVedit, which requires going to the menu to edit your inventory), including acquiring infinite stacks of items and infinite tools. As well as this, it also allows you to save up to seven different inventories and even throw stacks into the trash when they are not needed. The mod is currently compatible with Beta 1.7.2.