During last winter I dismantled lots of thrown away keyboards and broken mouses for some idea I’m planning to work on in the future. But one mouse in particular has attracted my attention. So, finally I found some spare time yesterday evening and decided to rewire circuit board of this little robot face looking mouse in order to make a simple badge powered by 3V cell battery. Since all original LEDs and push buttons were in good condition, it seemed logical to use at least one button. I also used battery holder previously removed from some old computer, a trick Stefanie taught me.