The HSM200 that @anon36505037 mentioned is a nice device if you need multiple notifications since it can do seven different colors. It has its own motion sensor built in if you want that as well. The newest model is zwave plus. But it is pretty expensive at around $70. And it’s not a battery option.
https://shop.homeseer.com/products/homeseer-hsm200-z-wave-multi-sensor?variant=23364824134
There’s a maker alternative based on the chip from a zigbee lightbulb if you’re OK with a tiny LED which is just either on or off. Here’s the project report on that. @BadAppleMan initially Set it up with mains power, but Later modified it to battery.
There’s also a lot of discussion about different indicator issues in that thread, so you would probably find it of interest. One of the things I like about the maker project is that it is very unobtrusive, you have to know to look for it. That’s good for some use cases, while the more obvious indicators are better for others. And since you’re making it yourself, you can choose a project box color that works best for each location, it doesn’t have to be a black case. Choice is good. 