ThingLink is an interactive web template that allows users to upload images, videos, audio, and other media and annotate them with text, links, and other content. It is free for personal use and offers upgrades for teachers and students. Users can import media from sources like Flickr and Facebook or from their own device. ThingLink makes visual and audio content more engaging for students by allowing different forms of multimedia to be linked together. It can be used across subjects and grade levels for activities like presentations, projects, scavenger hunts, and communicating with parents.