Here are some of the panels I have around my house. Most of these run on rooted 7" kindle fire tablets running CyanogenMod, and are mounted to walls near the old lightswitches. I have one main dash file, which has pages for each room. This makes it easy to control things in rooms other than the one you are in. The bottom row on each dash page is used to switch between pages. The “Light Lock” button seen on many of the screens below disables motion controlled lighting in that room while on.
Kitchen Panels - Covers the lighting in the Kitchen and adjacent rooms, as well as a few switches for appliances. The “Cooking Mode” script turns on all of the kitchen lighting, turns on music in the kitchen, and disables motion control to kitchen lights for 45 minutes. Handy when you’ll be in the room, but standing relatively still for awhile (such as when preparing meals). The “Pizza Light” is just what we call the outside post lamp. We really only use it when expecting food delivery, so the name seemed fitting.
Living Room Panels - Covers lighting in the Living/Dining room (really just one large room), along with some overflow from adjacent rooms. The “Colored Lights” button toggles a switch with some DMX lights and an LED strip. The Steam and XBMC buttons make http calls to a webserver running eventghost on our HTPC, which starts or kills the respective program. Handy to have, since we don’t tend to use a keyboard or mouse with that machine, and those two programs sometimes cause crashes and freezes. Music closet turns on power to our guitar and bass amps, pedals, and wireless system for playing music. Goodnight button sets a timer that turns off most of the lights in the house, most of the appliances, and lights up the bedrooms hallway leading to them.
Living Room “Colors” Screen - Made this to play with the lighting colors in the living room. Each color button on the top and bottom row run a script that controls the color of half of the lights in the room (that’s why there are two buttons for each color). These control Hue lights, a bunch of LED strips (running the Magic/Flux Led library), and an Hyperion installation. The middle row is to access the default Hue profiles.
Master Bedroom Panel - Lighting in the bedroom, control over the adjustable bed, and a few scenes.
HVAC Panel - this gives manual controls for the thermostat, curtains, and has some sensor readouts I don’t use much. It’s also where I had empty space to add buttons to access the next two panels which I added after I did the initial design. I’ll get around to cleaning that up, someday.
These next two are displaying on 6" (Nexus 6) phones mounted in the bathroom and by the exit, so they are a slightly different aspect ratio to accommodate the different screen size.
Main Bathroom Panel: has controls for the digital led lighting, smart mirror, and a timer for showers. It runs a script that blinks the lights after 15 minutes to remind my kids that there are other people waiting to get in.
Breezeway Panel: This is mounted right next to our main exit. Handy to hit the “all lights” button on the way out.
This panel is for a couple of Samsung Galaxy S3 phones my wife and I have on either side of our bed, for controlling things in the bedroom.
This is a similar panel for my kids to control things in their room.
Hope that helps gives some ideas of a few things you can do with HADashboard. Big thanks to @aimc for the backend (and for appdaemon, which I also make a lot of use of)