My app displays time units, such as
[minute, hour, day, month, year]. There will be no magnitude associated.
They convey the information "About how long will this action take?" (Think TODO list)
Is there an appropriate visual metaphor that quickly conveys the magnitude of time? Icons or otherwise.
Is there a corresponding form input?
Many (10) of these may be displayed on a page at a time. So they can't be huge.
They are not the central point of the app, so the goal is that they be quickly understood without training/reading.
I will be including my initial thought as an answer to this, but I'm hoping there's a better one.