Featured items in OpenSea refer to a curated selection of NFTs that are showcased prominently on the platform. These items are chosen by OpenSea or specific collections to highlight unique, popular, or noteworthy NFTs. Being featured provides increased visibility and exposure to a wider audience, potentially leading to more attention and engagement for the showcased NFTs. It's an opportunity for creators to gain recognition and collectors to discover exceptional pieces within the vast world of NFTs on OpenSea.