My house contains many clocks. Most of them are attached to computers and tend to sort themselves out when the clocks go back. A couple are manual and need poking at by hand, which isn't really a chore till you have a house full of them. But the wall clock in the kitchen is Magic - it just needs a battery, then it'll go pick up the time from Rugby and set itself. It'll automatically adjust itself when the clocks go forwards and back. It has no controls at all, as they're not needed.
This means that when it fails, it fails particularly badly. It's currently alternating between just spinning round and round quickly, and telling a time about two hours in the future. And of course, I can do nothing about this. I may replace it with something stupider.