Automations in Home Assistant are the best thing after the cocoa discovery, I use them a lot for many different things and I'm always wondering how to solve the first world problem of the day. The hassle with it is that apart from a list and the search there are not much more options to filter, and when your automations grow it became a bit of a pain finding what you want.
I was talking recently about how many Zigbee devices are too many and how the most troublesome thing you can have is batteries dieing on you at the same time. If you install several devices at once and have it's batteries dead at the same it it's a bit of a hassle going to each one and replacing it (depending where you have them and how difficult is to replace).
I've been adding some automations to my Home Assistant recently so it can inform us of takeaway menu changes for local restaurants. We have a few favourites and they usually offer different options each day so checking for updates and notifying us via our Telegram bot is pretty easy.