wind-up clocks.

If people had to wind up their clocks every couple of days they would return to a direct involvement with both the passage of time, and the fact that their own time cannot move forwarrd without them. They are Directly responsible for it.
Not to mention the cyclical nature of wind-up clocks, which also remind us that we may return again and again to the same hour, but never quite in the same way.

Yes, I DO love wind-up clocks.