I built PaleoCodex as an online interactive encyclopedia for Dinosaurs and other prehistoric animals for my six year old using wikipedia data.
He is a big dinosaur buff and wants to be a paleontologist when he grows up. His project brief was "Build a pokedex... but for dinosaurs"
Still kind of a WIP (Search is very basic and Text to speech / Listen feature may not work on iPhones, works on iPad/Nexus and Desktop using Chrome and Safari) and very much a weekend hack.
Built using python, tornado, wikipedia data and the skeleton html5 boilerplate. Uses ResponsiveSpeech for text to speech.
Enjoy! (and do send in your comments and suggestions)