Lettering, numbers, pictures that are part of a cookie or cake itself. (It's all one dough).
Many Various Examples of Actions One Might Not Be Aware Of Which Could Fall Under the Melacha of Memachaik;
דבר דבר (Dabair Davar): An Action That Is Allowed to Be Done on Shabbos Is Allowed to Be Said That They Will Do It...
Replacing a Watch Band, Working with a Necklace and a Pendant or Clasp, Rubbing off Chalk Marks on the End of the Sleeve of...