Clay yourself is another website you can use for creating virtual avatars, with a twist. Using this website, you not only can create your Avatars, but you can also record a 'script' which will prompt the students to enter vowels, adjectives, nouns etc to make a funny story which they can then record and share it in a gallery.
Imagine hundreds of thousands of great short videos, and other media, explaining every topic taught to school kids. Imagine them rated and sorted into a giant Directory, making them simple to find