I’d say almost? A piece from every whole category except home(ie homepod or apple tv)? Although I guess an iPad is considered a home hub so that sort of courts. I guess you could get even more technical and in depth into the ecosystem too. Like having piece from every actual product varience within a category ie…iPad Air/Pro, Mini…or Macbook Pro, iMac, Studio/Mini/Pro, etc.
If you have a standard Apple Watch, 7, 8, 9 or SE get a screen protector. A plastic screen protector/film would be best. If You have an Ultra get a Glass screen protector. For either standard or ultra I recommend RhinoShield Crashguard NX. I’ve had several Apple Watch models. Plenty are too bulky, too annoying to put on, or just suck. But the RhinoShield by far has been the best one of I’ve used. It’s more of an Otterbox than the official Otterbox ones have been in my experience.