A Slight Airflow Problem

My binder clip curtain was doing a great job blocking the light, except it sealed off the airflow completely and turned my sticky-note tent into a miniature sauna. Getting up to look for a fan sounded like an unreasonable waste of energy. I peered through a tiny seam and noticed an open plastic highlighter cap rolling around loose on the lined paper. With one flick of my spiral-wire rod, I caught the plastic clip and reeled it over. I jammed the hollow cap right under the corner of the paper flap to prop it open like an intake vent. A steady draft immediately poured in, saving me from suffocation without requiring me to stand up.