Did anyone actually answer the original question or did this just turn into a rust flex thread.
I have three. One at InterServer for personal stuff, two at HostHatch for a side project that barely makes enough to cover the bill. Used to have a fourth at Hetzner but their panel kept timing out during reinstalls and I got tired of opening tickets.
Spreadsheet and calendar reminders. Not exactly rocket science.
Anyway this thread died a month ago so maybe the poll is over.