Great article, and something I need to do be better about - I tend to do a lot of chores when my kids are sleeping or out of the house.
I've done better at letting them help with cooking and caring for our pets, and it's starting to pay off - yesterday we had scrambled eggs for dinner and my 3.5-year-old cracked and stirred all the eggs, and this morning she scooped the right amount of food into each dog's bowl, told her 1.5-year-old sister which dog it was for, and the 1.5-year-old passed them out.