the bottom line on staining a cloth or a towel by wiping one's hands on it; wiping one's hands on the same color towel;
Opening a paroches (ark curtains), cabinet doors with letters, pictures, numbers on them.
הכנה ליום אחר (Preparations for a Weekday): Sleeping on Shabbos to Do Work or a Mitzvah on Motzi Shabbos;