hands

I can tell what day of the week it is by what is all over my hands:

Monday - printing ink and notes-to-self done in ballpoint

Tuesday - clay

Wednesday - graphite from my bored-in-class fingerprinting experiments

Thursday - clay

Friday - piecrust dough and sugar :o)

Saturday and Sunday - papercuts, typing callouses, knitting callouses, the impression made by my ear from when I fall asleep on my hands...