A remixed nightlight based on the great design by jjpowelly (Thing 905142). This remix features a reworked enlarged case to host a plug, an Arduino to control the RGB LEDs as well as touch sensors to adjust the brightness and switch between a potpourri of light effects.
You can see the nightlight in action in this video on YouTube.
Detailed build instructions in this Nightlight Late-Night Edition blog post.
NB: This project powers electronic components (5V) with a mains supply circuit (230V > 5V) that is connected to a power plug (230V). If you are going to build this, make sure that you know what you do especially with respect to voltage insulation. In case of doubt, consult a skilled person or remix the design to directly use an unaltered line adapter or batteries.
22% transparent - 100% black
No need to print the plate with dual extrusion. Just print the plate and the inlay. Then use a rasp to make the parts that are printed together with the plate fit into the inlay. After that press the parts into the plate.