Challenge #10 - Dust all ceiling fans in the house and wipe down all light fixtures. Check to see if they have bugs trapped inside, if so, remove and wash out.
Challenge #11 - Clean out your utensil drawer. Pull out the tray and empty all debris from it (crumbs, dust). Vacuum out the drawer and remove any unused items in it.
I've actually completed both of these challenges less than a week ago. I usually dust on Fridays, and all the kitchen drawers were emptied and cleaned for the upcoming garage sale. It's nice to have a reprieve!