Hi Cowboy, this post suggests a way forward https://home-assistant.io/blog/2016/04/07/static-website/ I think rather than display the whole HA panel on the mirror, I would display just some key info, such as who is home, house temperature etc. The novel part of the project is then to use Alexa to display information in the centre panel of the mirror, and have that panel dynamically update. It would show the alexa feed (in my case at http://alexa.amazon.co.uk/spa/index.html#cards) but I would add extra functionality to Alexa by integrating with Home-assistant. E.g. if the door-bell rang, I could ask Alexa ‘whos at the door’, and a feed to the front door camera would show in the panel. Any thoughts on this approach?

OK using the iFrame module (https://github.com/desertblade/iFrame) I got mirror to show the home-assistant demo page, so a little more work required to get something usable but a start.
Cheers