MapleStory/Item Pot

Item Pot is a feature that can be accessed by opening the Item Pot window (default hotkey is Y). If you open up this window, you will notice one to three slots available (depending on your level). These slots can be filled with item pots (also called imps) or items that affect item pots. The goal of item pot is to level up an imp to its maximum level (actually, you must level it to its maximum level, e.g. 4/4, and then feed it until it is full) by feeding it Equip or Etc items. If you get it to its maximum level and feed it to fullness, the imp will give you an item. The item you receive is determined by the type of imp you leveled, as well as the closeness value that it had when it reached the maximum level. After you get the item, the imp is essentially dead, so it can be removed.

Item pot items can only be found by harvesting. Whenever a player mines or picks herbs, there is a chance that an item pot imp or item will drop. Items allow you to interact with the imps in special ways.

How to use item pots
Item pots are very confusing, and easy to mess up. Basically, to use an item pot you have to get an imp, then place it in one of the three slots. You can have three imps at a time, however, it is best to only try and grow one (easy) or two (difficult) at a time. Three is not advised because it will take a very long time to get all of their closeness values to 100.

First, acquaint yourself with the Item Pot window and the bars around an imp. To the right of the imp is its fullness bar, which will fill up with blue if you feed it.