Zazzle is an online marketplace that allows users to create and customize a wide range of products, including clothing, home decor, and office supplies. Founded in 2005, it provides a platform for designers and artists to showcase their work, enabling customers to personalize items with unique designs or their own images. The site operates on a print-on-demand model, meaning products are only created when ordered, reducing waste. Users can also earn royalties by selling their designs, making it a popular choice for creatives looking to monetize their artwork while offering consumers a diverse selection of customizable goods.