When I was in Dover ITE, I dabbled a little in electronic circuitry and microchip programming.. One of the projects was to create a electronic circuit board with LEDs, of which we could control using switches, and a buzzer, of which we could make a simple melody. At that time I was pretty fascinated, being introduced into this little world whereby you could actually make pretty useful everyday products, whether to impress or for usage. The possibilities are endless once you have the knowledge and equipment.
Here's one product of a little technical wizardry.
Nevertheless, I still prefer working in my current field haha...