Pastel Post-It notes dot the subway tiles with messages of anger, sadness, hope, and resilience. It's the brainchild of 28-year-old artist who goes by the name Levee.

Yesterday, a few carefully executed pastel and charcoal lines transformed a humble Post-It note into a £640 work of art. Office-workers may find themselves doodling a little more carefully on ...

You have a handwritten daily to-do list. You have your iPhone reminders, notes, and calendar. You have that magnetic, dry-erase board on your refrigerator to post your grocery list, chores, and ...