Motivational "Pass-Around" Cards... from MotivationWhatever.com and CardWhatever.com.... Pass them out, slip them under a door, leave them on a desk, slide them into a locker, pin them on a bulletin board... Heck, inspire a stranger by leaving them behind on a restaurant table, a coffee shop chair, or in the backseat of a taxi/Uber/Lyft!
Better deal with larger quantities - so buy 100 (or 1000?!?) and pass 'em out to friends, family, strangers, ANYONE/EVERYONE!!!