Hi everyone. I have searched for the presentation topics for Electronics, but did not find an interesting one. Could someone give me an advice on the interesting topic?
We are studying the subjects such as diodes, transistors and their circuits, amplifiers. You know, I want to present something interesting and cognitive to the audience and if it is possible to costruct a simple circuit.

 

Build a Chaos Generator in 5 Minutes! (<= clickable link). It is a two transistor circuit.