I’ve just started releasing my own Android ROMs for the Asus Nexus 7 (grouper). These ROMs are built off of the CyanogenMod source code (with a few extra patches), so they deserve all the credit. I’m just making my own builds in the absence of nightly builds.
If you happen to be a Nexus 7 owner and would like to try them out, they are currently available through ROM Manager.
Enjoy!