eing able to open your phone to get a quick coding session in is extremely valuable. I whip these apps out while waiting in a long line, at a doctor's office, or when I'm just sitting around leisurely. It beats opening social media if you're on a detox like me. Anyway, always be coding!
To diversify my learning, I usually find games to play to stimulate my mind. I am lucky that there are web design games that I can play to help me train my design eye.