Issue 57 of The MagPi, the Official Raspberry Pi Magazine, includes a complimentary hardware kit from Google that makes it possible to assemble a simplistic, voice-controlled smart hub.
The kit is said to include a "Google Voice Hardware Attached on Top (HAT) accessory board, a stereo microphone Voice HAT board, a large arcade button and a selection of wires," along with a basic cardboard fitting for all of the components.
Once the project has been assembled with Raspberry Pi, the device has the potential to work in the same way as the smart Google Home speaker, enabling makers with the right know-how to build their own voice-controlled systems to add an element of interactivity to their home environment.
MagPi's Raspberry Pi Project Adds Voice Interaction to the Home
Laura McQuarrie — May 5, 2017 — Art & Design
References: raspberrypi.org & digitaltrends