There are lots of off the shelf wall mounts available sold for offices and stores running tablets in kiosk mode, but many homeowners consider them too expensive as they typically also have theft-deterrent features.
http://www.galaxyenclosures.com/galaxy-tab-wall-mount-galaxy-wall-mount-galaxy-security-mount.html
Have you looked at the hardware mounting topic for SmartTiles? Lots of interesting ideas there: