back to school 2021 conceptual image

2021 accessories back background black blackboard blank bollte book botle chalkboard close college colored colorful coloured colourful concept conceptual conceptul copy covid19 desk disinfectant education effetcs equipment eraser face focus highlighter idea image knowledge learning mask objects office pen pencil pencils pens photo pile product protection school scissors selective small space stationery studying supplies table text textbook textbooks texture wooden