This is a Mini Skateboard or a Fingerboard. You are meant to rub it along tables & surfaces, and then figure out how to do skateboard style tricks with it, just by using your fingers. It's Sonic Riders themed, with a close up of Sonic doing a trick on the bottom, and a photo of the game cover art. You'll also notice the 15th Anniversary seal. The clue here is that green triangle icon with a "G" on it. Only Australia is known to use this symbol. This was a 'prize item' of some kind, hopefully the maker & what store/contest it was available from can be discovered. Added info by SilverOkaami