Back to School Intro Opener by Fox-Design on CGguy
https://elements.envato.com/back-to-school-intro-opener-NAHWVVV
Free 
Bundle Business Flat Concepts by IconsX on CGguy
https://elements.envato.com/bundle-business-flat-concepts-MA8CP95
Free 
Education – Flat Concept by IconsX on CGguy
https://elements.envato.com/education-flat-concept-JFUWY3P
Free 
Self-Improvement – Isometric Concept by IconsX on CGguy
https://elements.envato.com/self-improvement-isometric-concept-9ZHGM2W
Free