Here's a simple one - the standard date & month. Many designers will publish a face with the Date/Month displayed in one of the spaces. You may want to just load the Date/Month, or you may have changed a space and you want to go back to the default Date/Month.
The Date/Month item is actually in the standard Clock App in your Android app drawer. Tap the clock, tap the date icon, and you're back where you were.
If the comp space is themed, then the Month will stay at it's default color and the Date will take on the theme color. Looks great in a round space.
You can try it out on the watch face I'm wearing: