How to work with lettering, numbers, pictures that are written on cookies.
is one allowed to pull a thread to tighten a hem, cuff, button, etc. on Shabbos;
making boxes (e.g., cardboard birthday cake box, cookie box, etc.). Putting a mattress on a bed. Using liquid soap that becomes foam;
Tearing or Making a Hole in an Item; Tearing Pieces of Paper, Aluminum Foil, Plastic Wrap, etc.