I have:
ToDo and/or Kanban and/or Scrum and/or any another Agile application/list/item
ToDo list/item
Any Agile list/item
Some online articles illustrate agile workflows with looping arrows:

Maybe something like this (I would give it a more general name):


Ohh, I like those. Not sure which one though, maybe the first.
I also think that the first one is a bit better since the horizontal arrow is more recognizable.
Hm, I like the 2nd at large scale, but it's difficult to recognize at small size.
Here are two variants with slightly smaller circle sizes:

The arrow touching the bottom line in the 1st one makes it illegible IMO, but the 2nd variant would work quite well IMO.
Most helpful comment
Some online articles illustrate agile workflows with looping arrows:



Maybe something like this (I would give it a more general name):