Lettering, numbers, pictures that are part of a cookie or cake itself. (It's all one dough).
Is One Allowed to Relieve Pressure from a Blister, Pimple, Boil, etc. on Shabbos?;
is there a difference when opening a bag if the top or bottom is glued or just stuck together without a intermedium in between;
Making Beds on Shabbos and Cleaning Up a Room;