Scosche Industries released Scosche freeKEY, a flexible, wireless keyboard for the Apple iPad 2 and other Bluetooth enabled tablets. The freeKEY is water resistant and rolls up for easy storage in a backpack or purse. Here is more info:
The silicone freeKEY supports Bluetooth 2.0 and is compatible with Windows, Android and Mac OS X operating systems. Once paired with a device the freeKEY will automatically re-pair with that device the next time the keyboard is powered on. Scosche also includes a retractable USB to micro-USB charge cable for easy charging.