Harry Potter Headcannons

Chapter 178

After the Second Wizarding War, Hufflepuffs begins doing a weekly 'bake day' where they bake all sorts of goodies and distribute them to the other houses. No one is sure when or how it started, but Ravenclaw starts producing study guides for the other houses during exams, and then Gryffindor students make it a point to befriend a first-year (from any house) and show them the ropes, and then, finally, Slytherin admits to leaving those little inspirational, "you can do it!" messages everywhere.