I scratch built this (along with the quad gun) when I needed one for a tournament. Because I was using it for a tournament I decided to make it identical in terms of cover granted to the official kit, just to stave off any potential arguments.
They're pretty utilitarian, and turned out a bit more Tau than Eldar in some ways, but I quite like them. Made of laser cut cardboard sections, but I could give you the templates to cut manually if you wanted.
I've seen the Micro Art ones listed above in person - they are very nice, but I never liked the idea of using force fields for a defence line. Something about the idea of having something that has to be powered and functional in order to stop me dying doesn't really strike me as a sensible tactical choice
The other ones listed above I kinda hate. I've seen images of them before and they always look pretty tacky. More High Elf than Eldar; too curvy and cartoony.