Counting affirmations with toes on feet while doing mudra

[fractionalBhairav666]

Like we have a bead mala(rosary) for counting the affirmations during the workings is there any known device/object that can help us count affirmations while we are doing mudras by hand?
I have been getting ideas on making a toe triggered/toe twitch triggered counter for this kind of application but thought of asking if there is something already out like what I am thinking.
Hail Zeus!!!!