The difference between one letter or two letters; writing with a "SHINUI" (not the usual manner).
One letter on top of another letter.
wiping one's hands or mouth on a towel when they are dirty from colored foods or drinks (e.g., grape juice, pomegranates, colored ices, etc.);
הכנה לחול (Preparations for a Weekday): Doing an Action and Using Only Part of the Outcome. Doing an Act on Shabbos Simply to Save...
Cutting Dental Floss; Questions Which Come Up with Toilet Paper; Opening Small Packets of Sugar, Ketchup, Salt, etc.