Input Devices I built microcontroller boards for a light sensor, microphone, and button/led display. I printed all of these boards with the vinyl cutting machine, and stuck them directly on 1/4" acrylic. This worked well. The heat from the soldering iron slightly melts the plastic, so the flex circuit is more durable. The image of the board to the left is the button/led board. Pressing the button toggles through different led configurations. Here is a video. I also laser cut pockets in the acrylic so the MTA connector can be embedded in the surface, so hot glue will not be needed to hold the connector in place.

Input Devices video of the py-ty light sensor display and python code video of the py-tk mic display and the python code assembler code for the light/button board and schematic