* DeviantArt: DeviantArt is a popular online art community where you can find a wide variety of Miku Miku Dance backgrounds.
* NicoNicoDouga: NicoNicoDouga is a Japanese video sharing website where you can find a variety of Miku Miku Dance videos, including many that feature custom backgrounds.
* YouTube: YouTube is another popular video sharing website where you can find a variety of Miku Miku Dance videos, including many that feature custom backgrounds.
* Google: You can also use Google to search for Miku Miku Dance backgrounds. There are a number of websites that offer free downloads of Miku Miku Dance backgrounds.