A Grid Worth Filling

I waddled five steady paces across the wooden expanse and ran straight into a thick, spiral-bound planner! Its open page was lined with empty rows and neat little boxes just begging for completion. I leaned my weight against a yellow pencil resting nearby, shoving it until the graphite tip rolled forward and tapped squarely inside one square. A crisp black mark appeared! That makes one checkbox down, wouldn't you say? Leaving a row half-finished simply won't do!