I have come up with a discovery so beautiful in its simplicity that I feel like 3M’s Art Fry and colleague Spencer Silver must have felt upon inventing the Post-It Note decades ago. And like those fine gentlemen, I am giving this discovery away free.

The technique for doubling the life of Post-It notes is so simple and elegant that I don’t know why I have not read about it before. As you’ll see when I reveal the technique below, (which I am affectionately calling, “Be Nice, Use It Twice”) you’ll wish you had started years ago.

Can you imagine the savings??? There are 6,005,000,000 post it notes sold every year – 6 billion – according to Wiki Answers. (If six 100-packs cost about $10, that’s $100 million right there.)

Though 3M’s sales are down 20% from last year, the company is still reporting first-quarter sales of $5.1 billion, — over $20 billion per year – and a good chunk of that is from those cute little sticky notes, according to  Industrial Distribution, a Reed Business publication.

Everybody loves to use those cute notes with the low-tack adhesive on the back. They’re not just stuck all over your office and mine. The FBI uses so many of them that they’ve coined a term for them: FLYNs.

“That stands for ‘funny little yellow notes.’ Except I’m cleaning it up when I say ‘funny,’” according to Fry, one of the inventors of the notes as quoted in an entertaining article by Greg Beato, called Twenty-Five Years of Post-it Notes.

The U.S. Post Office uses a higher-adhesive version of the yellow address labels to forward mail.

Who doesn’t use them?

So get ready to save big: Double your usage, double your fun. Here’s how.

Be Nice, Use It Twice Technique

1. After you have filled out the top of the post-it note – and you have already done the chore: BUY MILK, DEODERANT, DOG FOOD – Fold the note up and over at the point where the adhesive bar at the top ends. Make a sharp crease.

2. You will see before you a whole new post-it note. Write a second message, then lift the note back up a little and it will stand up like a little message-soldier.

The area to write on is slightly smaller. But the second-time around the note is even more helpful at reminding you what to do because it STANDS UP instead of lying flat on your desk. How cute is that!

If everyone took this simple step, we could save hard-working, multi-tasking Americans (with memory deficits that require post-it notes to survive) over $100 million a year. Maybe this simple act won’t exactly empty the landfills, but imagine how much space we could save by keeping over 6 billion of these little sticky suckers out of the dumps every year.

Be nice, Use it twice.