If you are a geek and living in Scandinavia then you have the opportunity to join a summer camp from the The Danish Youth Association of Science.
- Game Development Camp(http://www.game.unf.dk) if you enjoy programming, graphics or just game development.
- Robot Camp(http://www.robot.unf.dk) if robots and artificial intelligence is more your thing.
More information about all camps at http://www.sciencecamp.dk