Case for Efika... Long story!
I'm still building mine, I got almost all I need.
My choice was this 5.25" enclosure:
http://www.maplin.co.uk/module.aspx?moduleno=97121http://www.maplin.co.uk/images/full/a15fw.jpgBought from Maplin for 25 quid. What I liked about was the aluminium finish and mesh sides
And it's really easy to access with the screws on top (and bottom).
Efika fits there perfectly, even with the longer-than-usual Radeon 9250 with 256MB (they are longer than 128MB Radeons).
The enclosure comes with the 12V AC/DC adapter aswell, so I used it to power my PicoPSU (which also fits perfectly in this enclosure).
All I need to do now is to make some kind of a back-plate with the holes for Efika layout.
I'll post some photos when I reach the right stage =)
Good luck with your project.