Honkmaster 3000

When my leg was broken, I bought a car horn to upgrade my gadget crutches. I found out that the switches I used all got burnt and corroded, so I reused an old and partly broken Einsy Rambo and used it as an advanced on/off button. The power to the car horn was supplied via Rambo's hot-end pins and the switch (reused old mechanical 3D printer end-stop) was connected to the pins where the PINDA sensor should be. This worked well. Too well - it almost gave a heart attack to several people.
 

I decided to reuse this idea for my stroller (just for fun, without any kids involved - it would be irresponsible to scare them with a loud noise). It serves as an idea that you may use any Arduino-based board to make the stroller full of smart electronics! You can use it for adding and controlling headlights, a tachometer, or a thermometer, for example. Or, you can use it to power a heated tile from the Original Prusa XL to make a smart heating cup holder with thermal runaway protection, etc.