Before I customize something like this myself, I thought I'd shout out and see if anyone can send me to a website for immediate purchase.
I've scoured the Web but cannot find a covert cam/dvr in an enclosure like this one. The application is a marbled entryway of a typical San Francisco Victorian triplex. A wall sconce similar to the image above is the only object available to work with, without causing tenant suspicion. (one unit appears to be sub-let. Client needs 45 days of data to enable his attorney to proceed with legal action!!)
Thank you for your suggestions.