I stumbled over the following instructable for a moleskin iPad case (credits here for the maker of the case which inspired me to make my own case):
Also, I found the Dodo-case for iPad on the internet and thought, I could combine both in a DIY book style iPad case for the iPad I purchased 2 weeks ago.
I have used the iPad for 2 weeks and the DIY case for 1 week now, and both just works perfect.
If you like this instructable, leave me a note. I would love to get some feedback.
Like always, this instructable requires to work with tools, so don't hurt yourself.
If you get hurt during the process of making a DIY case according to my instructable, I'm not liable for any damage to yourself or your device for which you create the case.
Take care and have fun "making".
Thanks for the comments and warm words so far.
I had another idea which would be easy to add here. I bought a silicon case last weekend just for at home because I like the slim design of the iPad. But I thought it would be awesome if the iPad could go into the case including the silicon case. This way, you could use it without the "book" at home and just insert it into the "book" for on the go :-)