Environmental animation. 'Backgrounds are important!'. Rich Buckler said it best in his 1986 classic art-instruction book, 'How to Become A Comic Artist'. This lesson was hammered into me as an aspiring young comicbook artist, so my idea has always been to strive to create a background that is good enough to stand alone. Thanks to Andrew Price, Blender Guru, one of my favorite Blender instructors, for his fine cloud-making tutorial: https://www.blenderguru.com/tutorials/how-to-make-clouds-with-cycles?rq=cloud