Apple iPads are the equivalent of spoiled children when it comes to proprietary accessories. One of the most compact and ergonomic options include the Touchfire keyboard. It's a silicon mat that attaches with magnets, and the iPad Mini model has keys which optimize typing on the small tablet.
Logitech Harmony Smart Keyboard
Interested in one keyboard to run them all? If the idea of a universal keyboard (like a universal remote) sounds appealing, the Logitech Harmony Smart Keyboard can be that for you. In addition to devices like your TV, Roku, and Playstation 3, it works with tablets running Android 4.0 and up, as well as Apple iPads running iOS 6 and up.
The FrogPad 2 is a keyboard for typing with one hand that is compatible with all Bluetooth 2.0 packing slates. The unique design optimizes the keyboard layout so typing becomes quicker and more efficient. Not only is the FrogPad 2 meant for single-handed typing, it's compact size makes it ultra-portable.
Logitech Pro bluetooth keyboard case
A 12-inch tablet is worthy of a robust keyboard. The Logitech Harmony Pro is an impressively durable -- but thin -- Bluetooth keyboard that doubles as a protective case. The keyboard keys are concave for a more comfortable experience, and like most folio-cases, it can also be used as a stand. The case is available for both the 12.2-inch Samsung Galaxy Tab NotePro and TabPro.