We (the concept team here at Avalanche) started those morning exercises to stretch ourselves in the morning. We come up with a new topic every day:
First day: take the given landscape and apply a challenging color scheme of your choice. I choosd red and purple. I didn't know what to do with it after 20 min so I stopped there. :)
Second day: take a movie poster of your choice and recreate it using a stylized/graphic flat shapes style.
That was a real stretch for me since it's so far away from my natural art inclination.