I created this to use with students who are unfocused and I need for them to increase their self awareness. I laminated this, and put a paperclip on the side so they could slide it when I asked them how focused they were feeling. This has helped me help them be aware of their tendency to zone out. Also, I talk to them about how to redirect themselves and if there are disparities we talk about how they seem more/less focused to the outside world (me, in this case). :-)
Hope it helps!