A photo keychain is a small keychain or keyring that has a space to hold and display a small photograph. It typically consists of a clear or transparent plastic or acrylic frame that can hold a photo, and it is often designed to protect the photo from damage or wear. Photo keychains are a popular way for people to carry a picture of a loved one, a cherished memory, or a special moment with them wherever they go. They make for great personalized gifts and are often available in various shapes and sizes to suit individual preferences. You can often find photo keychains at gift shops, photo printing stores, or online retailers that offer customizable and personalized items.