The SOS Morse code project with one push button and two Leds by Mickaël (LP2I, France)
An LED chase effect project where a potentiometer is used to speed up or to slow the effect was done by Natalia and Melvin (France).
Here is the video of their chase effect:
Maxime & Jason’s (France) article on the Traffic Lights project
(click on the page below to open a new one):
and their video of the operating circuit: