I wanted to do something nice with the my kids that they will find interesting and which will spark their imagination. My oldest daughter was walking in the house and was making the sounds of my phone when a message was coming in: DROOOOIIIIDDDD and I thought to myself, why not 3D print the Android symbol and just put some LEDs in it for fun.
But I thought to myself, well I need something cooler that way I can have fun with it as well. So, i just thought let me connect the ATTiny with it. Now, if you are interested in that project you can find more details here: Attiny-85 And Android Doll