Have your walls been redecorated with some original crayon masterpieces? Don’t lose your cool. Just grab a damp rag, dip it in some baking soda, and lightly scrub the marks. They should come off with a minimal amount of effort.
Did the kids use your wall as if it was a big coloring book? Spray some WD-40 onto the marks and wipe with a clean rag. WD-40 will not damage the paint or most wallpaper (test fabric or other fancy wall coverings first). It will also remove marker and crayon marks from furniture and appliances. In worst case scenarios, follow these pro tips for removing wallpaper.