I've been working in a set of PCB designs and 3D cases around ESP8266. And now I'm releasing it.
It's a complete set of devices with its own power supply, the ESP and the sensor or actuators. The cases and support (to fix motors, or instance) are ready to 3D printing.
After a couple of years I release my whole project almost finished.
Finnaly it consist in a base PCB and several plugins, with their 3D cases. I could design more if you want to.
Also I include 3D printing designs (cases and devices), including one device that can accommodate a NEMA17 to drive a shutter.
Really, now we have devices like Sonoff, so for example my relay shield is a silly thing, but others of my shields, like the DC control (LED strips..) and the stepper controller (motors), may be interesting for you all.
The original archives are in DipTrace (PCB designer, freeware) and Solidworks (3D design software).
Would be so easy for anyone to send PCB's to any chinese manufactures for a couple of dollars and assemble yourself in house.
If you need I can generate gerber files of any of my designs, just ask me.
Here you got: https://goo.gl/NRLWPz
If you have any question or suggestion, please, don't hesitate. This is free hardware!