Watches
I never saw the point of them. I don’t see the problem with analog or digital watches. Everything is regressed to a tiny square of a screen, that you barely look at. I just find it as an unnecessary distraction.
Light Bulbs
I work in retail and I stock these things all of the time. We have light bulbs, that are smart now because why? They’re stuffed with wireless functionality, just so you can simply change a color or maybe dim it through phone. More unnecessary apps, more unnecessary functions just for cheap attraction.
Kitchen Appliances
I’m bundling them all here.
There is nothing you’re gaining an advantage of, when slapping a screen on any appliance and relying on some unsupported app on your phone for basic functions.
I personally use both a smart light bulb and a smart watch. The smart watch is to track my heart rate during running and light bulb for wake up and sleep routine for my 1 year old.
Smart switches can also turn on and off heaters and light bulbs, smart washing machine is very optional but timing it so that it completes when I finish work is nice, some people can time heavy electricity use for night time or peak solar to reduce cost.
None of these need to be smart but there are some benefits for some of them.