A popular challenge that beginner programmers participate in is called 100 Days of Code. Although I never participated in it myself, I see countless tweets with screenshots and progress reports of people sharing bits of apps they made. 100 Days of Code is a great way to keep people in the programmer mindset. It gets them familiar with what it is like to code every day. Still, I wonder if it is the best approach for everyone. For them, One Game a Month could be a great alternative.