This is a blank switch cover plate that you can use to stick your Phillips Hue Dimmer to the wall, next to an existing light switch. This is very specifically designed to work well with the Leviton screwless wall plates, and with the blank plate overtop of a solid wall. So a normal one-gang switch turns into a two-gang switch without drilling any holes in the wall!
Which is how it's setup in my example pictures - the two real switches are in a box in the wall, and the Hue remote is attached to the cover plate on top of solid wall. It works great!! The remote is slightly south of center when it hangs on the wall, though in practice you probably won't notice it.
My design has two holes for 12mm x 3mm magnets. I think it would work with one magnet in each hole, but I ultimately went with two magnets in each hole (total of four) for a more secure hold on the remote. They are hot glued in place, though they do attract each other and stay in place pretty well, so I'd be curious if it would be alright to leave them unsecured.
I really wanted this to work with the Leviton screwless wall plate cover, so that's what it's designed to fit, but it should be pretty universal.
If you want to continue this remix train, I've included my STEP file as well.
The supports are probably not required, but they are pretty low impact so I printed mine with them. Also I did enable the top layer ironing feature in Cura to try and make the front a little smoother.
The author remixed this model. Imported from Thingiverse.
This is a remix of a solid design with a handful of tweaks: