For each feeling explored, you can ask and jot down "what makes me feel ___." This can be documented either each Feeling Board/Poster or children can draw/use crafts to show what an angry face might look like... THEN teachers will write what makes them angry.
This is part of the free editing set from First Grade Wow. For kindergarten, I use it to show what they can do (smiley face in the check box) and what their newest personal challenge is (I highlight the check box). They keep it in their writing folders. It helps differentiate learning and gives each student focus. There are many other useful pages in the packet, too. All free!