Unfurl or slice open a cardboard box, so that all you're left with is a long flat piece of cardboard. (You want this to be at least as long as your staircase, so you may need two or even three boxes, ...

Moving is stressful for everyone—yes, even that Type-A friend who owns a label maker for their label maker. Even if you’ve never lifted a box in your life, moving comes with emotions: nostalgia, fear, ...