Having been in the business for 30+ years, none of the "stunting" or antics I have seen lately seem all that daring or creative. Not just around RDU and Triad, but across the country.
Playing a song over and over is pretty old hat. The robot-voice countdown was a thing for awhile. I worked at a station in the Midwest that ran one of those...it was actually a custom-built PC with software that "spoke" the countdown, and randomly spewed out catch phrases from TV shows and other pithy statements. It was kinda entertaining to listen to, just to see what the thing would say next.
The great DJ/programming pranks that stick out in my mind...well there are two. Some radio station in Louisiana came up with a promotional campaign for a shiny new mega-mall that was to be built entirely underground. The campaign was built up over a week, and the "commercials" ramped up in excitement as "opening day" approached. At the last moment, the station aired an announcement that due to an earthquake, the underground mall had to be relocated somewhere else, which was certainly disappointing to the crowd that showed up for the "opening".
The second creative stunt I heard about happened when the Space Shuttle was still flying. As an April Fools joke, a radio station in San Diego announced that NASA had decided to land the shuttle at a small airport just outside of town that day. As it happened there was not even a shuttle on orbit at the time, but naturally a big crowd of clueless listeners mobbed that airport and tied up traffic. The authorities were not amused.