Quantity   Component name
1 × Raspberry Pi 3
1 × HDMI Display I used the HDMI 4 Pi: 7" Display no Touchscreen 1024x600 w/ Mini from Adafruiit
1 × Speaker I used one with a jack, but it could be a usb one
1 × USB Microphone Actually, I used a webcam with microphone. The cam could also be used to activate the interface when a user is looking into the mirror
1 × One-way mirror I used the glass from a photo frame, with a one-way film I got at the hardware store. This was a less expensive solution, since I was planning on making a few prototypes
1 × Frame I used a photo frame I had lying around. Since it is slightly larger than the display, I used black cardboard to fill the rest, so that the full frame is a mirror.