Since there's a National Day of very nearly everything (March 5 is National Cheese Doodle Day, so there is some precedent here), why not set aside some time to celebrate the nation's most popular cookie?
What makes a good slider great? Salt, of course — specifically, a sea salt infused with rosemary, sage, thyme and marjoram. The bacon doesn't hurt, either. That's what you get at the Butcher Salt food truck.