I bought this case a while ago.
It's pretty good for $8. It fits perfectly and is high enough quality where I keep thinking it came with the Fire.
http://www.ebay.com/itm/300612581438?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
Oh, I guess I can put updated impressions. Hmmmm. I still like it. I've been checking the app store once a day to check out the free app. Some apps are really good. The email app, the weather channel, mapquest, pandora. The best games I've played are where's my water, cut the rope, fruit ninja, angry birds, dabble.
I was looking at my brothers kindle with the electronic ink. For books the electronik ink kindles are probably better (the fire is backlit). They flip up black or white pixels so it only uses electricity when loading a page. That's pretty cool.
For websurfing it doesn't really work good for websites like CAG, that have small print and small things to click on. It's works best on stuff like youtube or facebook. I use it for good quick apps like email, weather, or maps. Reading forums... I just use my PC.
There's some mismatch between apps and app version versus the real android marketplace. I think the fire marketplace is everything that's on amazon which is different than what's available on the android marketplace.
The reviews for all the apps are general app reviews. The game majesty crashes frequently on my Fire (only app I've had crash multiple times), but it has really high reviews, because it works fine on other platforms. The amazon marketplace has an older version, so maybe a new version would be more stable, but who knows if amazon will ever update to the newer version.
When downloading and installing apps the fire can run fairly slowly. It can be hard to scroll across and it can be somewhat unresponsive until everything is downloaded and installed.
There is something called Pulse which I think is Amazon's news headlines. I used it when the Fire was first out and I absolutely hated it. Ideally I would like my to use my Fire to read headlines and news, but so far I haven't found anything to do this well.
All the video and music streaming seems to work very well.
Battery life seems to last about 4-5 hours of use over a couple of days.