We've always liked motion simulator games, where you can interact with a virtual environment using a controller like a steering wheel or ski set. Now, an Australian design firm has brought the idea to the playroom set with Virsual, the digital rocking horse. The proof-of-concept project includes a bright yellow rocking horse that communicates wirelessly with a game played on a TV screen. As the rider moves, the terrain scrolls by, synced to the child's motion. We think most young kids will probably dig it, though we're not quite so sure about the "advice-dispensing chickens, friendly fish and giant snails" included as part of the game play.