Apple offers several iPad accessories
iPad Keyboard Dock with hardware keyboard, 30-pin connector, and audio jack
iPad Case which can be used to stand the iPad in various positions .
iPad Dock with 30-pin connector and audio jack - Video adapter
iPad Dock Connector to VGA Adapter for external monitor or projector
iPad Camera Connection KitiPad Camera Connection Kit including a
iPad 10W USB Power Adapter with 2 A output (10 W)

All the Accessories and much more can be Found right HERE