Hi I am at a rural High School and I look at a lot of middle school lessons for inspiration. I agree with the K-pop slams. The students go bananas. I have also adapted some of the lessons that Vitamin-d, adventure_rider, and Leo Fuchagami have made as they are creative, colorful, and interesting for bored HS students. I also have my lessons quite .gif heavy and utilize a lot of relevant pictures of babies, baby animals, and poop. Yep poop.
Hope this helps.