
In many fan artworks and videos, they are seen driving a road roller (similar to a steamroller) together, often to comedic effect. The Kagamine twins do also have another shared character item, though they are not usually seen carrying it. Rin's yellow hair combined with her large white bow accessory is said to resemble a mikan orange with leaves attached, while Len's likewise yellow but unruly hair and is said to resemble a bunch of bananas. Kagamine Rin and Len's character items are commonly accepted to be the fruits mikan orange and banana respectively. The leek has become Hatsune Miku's unofficial character item and fans may often be seen wielding both official and unofficial leek shaped goods, including glowsticks and occasionally even real leeks, at Hatsune Miku related events. This video was immensely popular, which along with Hatsune Miku's teal green color scheme, has resulted in Hatsune Miku often being depicted holding a leek. In 2007, a Vocaloid cover of "Ievan Polkka" was made, which was sung by Hatsune Miku and accompanied by an animation of Hatsune Miku waving a leek. This flash animation depicts the Bleach anime character, Inoue Orihime, twirling a leek set to the traditional Finnish folk song "Ievan Polkka". The origin of Hatsune Miku's association with leeks dates back to 2006, when the Loituma Girl (also known as "Leekspin") flash animation became a popular meme on the Internet. Hatsune Miku's character item is commonly accepted to be the leek, a long, cylindrical, white and green vegetable. For example, while a leek was never part of Hatsune Miku's original character design, it is now not at all uncommon to see official illustrations and figures depicting her holding the white and green vegetable. While not part of the original character design, most popular Vocaloids have a fan designated character item, many of which have become officially recognized by the original maker due to their immense popularity amongst fans. These depictions grew in popularity, occasionally with differences in opinion on which item would suit each character best, the "Item Wars". Fans would depict their favorite Vocaloid in art or memes with a certain item, usually based off of their color scheme or assumed personality.

The affiliation of Vocaloid characters with certain items has its roots with "Item Wars" (持ち物戦争, mochimono sensou) that occurred between fans online. This is often a source of confusion for many people who are unfamiliar with Vocaloid characters as the relevance of these items is not immediately obvious. Vocaloid characters are often depicted with a particular item, for example Hatsune Miku is often pictured as holding a leek and Kagamine Rin a mikan orange.
