I currently design a case for the Raspberry Pi. At the moment its just a kind of "alpha version" but the case will be available in approxymatly one week.
In principe, the Raspberry case will have strong version with thick walls (2mm) and an other with thinner walls in order to have a cheaper price.
On the picture there isn't the openable system of the case but I already done it on my drawing. I prefere to dont show it before it will be perfectly suitable. (the openable systeme of the case will offer the possibility to custom aesthetically the case with 2 colors (or with transparency/colors).
I hope you like it.
If you have some suggestions or questions about the design don't hesitate to say it. I will try to take it into consideration.
Sorry for my english, I"m French.