There are a few buttons around the house. For my wife (and kids to play with) the most important ones are the ones controlling the light in the bedroom. There is a motion sensor covering the door and wardrobe area which can be muted with a button (e.g. if the kids have snuck into our bed and we don't want to wake them or if either one of us goes to bed later). We use mostly the IKEA Zigbee buttons.
We also have a great device called Home Buttons in our kitchen. It uses MQTT and has a fantastic battery life (using a 18650 rechargeable battery). It has an e-ink display and six buttons. I programmed it to display several things (you can use one MDI icon and a short text to display for each button) for everyday use, like switching some lights, displaying temperature and humidity and controlling the climate in our conservatory. You have to press a button for it to update (to save battery - even though it easily lasts months).
The main touch point though is the app. I built three dashboards:
- A general overview that dynamically changed based on events and time of day.
- A floor plan which holds every light, sensor and switch in it.
- A blood glucose dashboard as both one of my daughters as well as myself have diabetes. As I use the same insulin pump as my daughter I cannot use the pump's app to follow her data as I need the app for myself. So for me this is quite important. My wife uses the pump's app in follower mode for our daughter.
But I also made Home Assistant send notifications to our smartphones for several events (dishwasher, washing machine, too hot / cold in the conservatory, low blood glucose levels, kids turning on the TV in the morning). Some of them offer to respond with an action others are just reminders that something needs to be done.
My wife appreciates especially the notifications I think because you don't have to think about some things as they pop up when action is due and we both can more easily share the workload as she gets notified as well when I started the dishwasher without me needing to tell her. (This may sound like we're not speaking to each other, but we're just not saying things like I just started the dishwasher can you empty it later.)