[randomswede]

depending on your calendar tooling, you may be able to have calendar events shared between multiple calendars. And I do understand the whole "not wanting more devices", although it can lead to having a harder time separating work from not-work.

Personally, I have accepted that the only way I can get a decent-enough separation between "work" and "not-work" is to, as far as possible, separating work devices from personal devices. I have a me-phone, and a work-phone. Unless I am on-call, the work-phone tends to not be near me during not-work-hours, it sometimes gets shut off on weekends (unless, again, on-call). I have a work laptop, and a me-laptop (currently about 80 mm apart), the me-laptop stays closed during work, the work-laptop stays closed outside work.