- Tidal Clock- A visualization of time through the rising and falling of sea levels. This could possibly be represented through waves rising and falling in a clock shape, with the numbers on the clock jumbled at the bottom of the clock.
- Daylight clock- A clock with shaded portions for nighttime, highlighted colors to show daytime.
- Solar system clock- A clock that shows the planets in our solar system rotating around the Sun to portray the passing of time.