I have the clip on ipad2 cover from apple, which doubles up as a stand and puts it on standby when you close the cover (Does it have an official name? Or just iPad cover?) It is so convenient I have never considered trying anything more personal and different – there was no need.
Until I came across these – iPad covers made out of a notebook (or hardback book):
Thank you for Etsy emails – letting you find stuff that you want when you don’t always have time to browse the web.
See the full collection of iPad covers made out of books for more inspiration.