Anything: Series, video game, book, food, old toy from childhood, service, etc. Also, any series which you wish did not end, etc.
I still prefer them for work phones. Gestures to open the camera or turn on the flashlight are a lifesaver for me.
I def miss the twist for flashlight. I have a pixel now which I hate but it has a feature to tap the back twice. I use it for my flashlight but it doesn’t compare