Consider watching this video with FreeTube, a nifty open-source program that lets you watch YouTube videos without Google spying on your viewing habits!
Combined with Libredirect, which automatically opens youtube links in Freetube, it becomes really slick and effortless to use.
The point of the carousel is to have it computer controlled for easy finding. Zack was talking about having a system where he could locate items using RGB strips and gridfinity. The carousel just adds another dimension to use more vertical space.