Lettering, numbers, pictures that are part of a cookie or cake itself. (It's all one dough).
Cutting Dental Floss; Questions Which Come Up with Toilet Paper; Opening Small Packets of Sugar, Ketchup, Salt, etc.
דבר דבר (Dabair Davar): Making Calculations on Events Which Already Took Place Before Shabbos;
Part #2. introduction to the Melacha;