1 or 2 hand towels to wash (1 for paint, 1 for lowerbody and wheels)
1 or 2 bath sheets to dry
1 hand towel for the minor drip removal, which you will also use to z6
1 or 2 bath sheets to get the Zaino off
------
My vote: 4 hand towels and 4 sheets, since they might not all be cleaned and dry.
Oh, and don't forget a colored Charisma Select for your signifacant other, so you don't get in trouble
