I own, maybe 8 tripods. I also have a monopod, couple of sliders and a gimbal. Each of these has heads which take some form of tripod plate. A way to attach your camera to the device. But the big problem with them is that they all typically tend to use different tripod plates to each other. This means lots of switching out plates on-set as you need to move from one to another.
This number of camera supports might seem excessive, but I am not alone. Many folks out there own a number of tripods, sliders and other units, especially if they shoot video as well as stills. This video from Jordy Vandeput shows us how we can standardise all of our tripods to make swapping out a breeze, saving a lot of time.