I spotted this Bluetooth® wireless keyboard for iPad in Inc. Magazine, and I think this is the most successful combination of a cover, keyboard, and a stand I’ve seen so far. It attaches to the iPad through a magnetic clip, supports portrait or landscape placement, and has an automatic on/off function, which conserves the battery power. It’s made of aluminum and hard plastic and is offered in black, red, or white.
Logitech Ultrathin Keyboard Cover for iPad, $99.95
Also available from here.
moddea 
I have one. BEST accessory EVER. I have had it 5 weeks and use it all the time, and I haven’t needed to charge it yet. Huge battery life. 10/10 Logitech. Nice job
Is the new cover for mini ipad?
It’s only for iPad 2 or the new iPad.
It won’t stay closed and thus drains the battery. If you have a solution, I’m all ears.
The Clamcase, though $50 more is an excellent alternative and will not have any “cover staying open” issue.