Or you could use cheat codes, like Real-Time World Edit (RTWE) or Text-to-Item (TTI) codes. That is the reason why i put the hexcode of the item on the screen when DiiLC process the items.

I typically do the following steps (without the need to use PC/computer):
1. Extract savegame from Wii to SD card
2. Run DiiLC to insert the new item data (and write down/remember the hexcode to be used later when playing the game)
3. Install savegame from SD card to Wii
4. Play ACCF (through geckoos) and use RTWE cheat codes to create the item on-the-fly.

Cheers.