Not used

From Wild World Wiki

[edit] not used items

Not used items are special hacked items, obtained only by using the Animal Crossing Map Editor. They are items that have been removed from game or are used for graphical purposes, all appear named as not used in your inventory but may differ when dropped.

One example is the not used Honeycomb, it is used as a graphic for when bees fall from trees, it looks like a Honeycomb outside, but appears as a leaf inside. There is also a not used 4 leaf clover which cannot be warn in your hair and doesn't change into a book inside.

Many of them can be used as furniture in your house, they include:

2 cardboard boxes (when neighbours move) 3 cardboard boxes 5 cardboard boxes display cabinet (like in the museum for small fossils) Invisible chair 1 Invisible chair 2 (One of these can be climbed on from either side) Big rug (A display of the cabana flooring, as it appears in the catalogue) Big rud 2 (The same as above, but the wall and not the flooring.) Paper previews (for all the paper available, just like in the catalogue.)

Not used items have much value and popularity in the online community because of their availability.