Used to be ashamed of this, but after hearing that some other very esteemed top instructors also had the same problem I've gotten over it. And that's an ability to coach and count at the same time. Seeing that the coaching part is more important, I decided to add a couple sets of poker chips to my collection of workout items. One is this very simple plastic box of 100 chips which occasionally comes out to the park with us to help keep track of how many rounds we've done in a circuit, or if there's a "do at least x number of single presses on your own time during today's session" challenge of 10-20 chips per person.
I had a late conference call again last night, and while I hoped it wouldn't go long, you never know with these things. Leading up to the call I needed to get a number of things accomplished. One was that I really wanted to work on some specific bodyweight progressions to make sure they were solid for the upcoming PCC. The version of the "Poker Chip Workout" I did last night was a little different than the one you see on the picture, but accomplished what I needed nicely (I practiced more variations of the items listed, adding in a couple of one arm push ups, things like that...) During the time between some of the more max-effort items, I managed to finish up some small household chores too - getting more done in the same time. Can't always do that with the more focused, timed, or high intensity workouts, but it works great for bodyweight strength challenges.