I use the WEIRDO chart when I first introduce the subjunctive. I tell my students that this chart will become very handy for the rest of their Spanish years. When I introduce the subjunctive I always tell my students that their lives are about to change. They keep it because they know they will have to refer to it often.
This is the black and white version of the chart I use when teaching the subjunctive. Students prefer the color columns; you can purchase this through my store. ¡Gracias!