Fruits, pits, etc.
Putting in small amounts of sugar, salt, black pepper, etc. into a completed mixture.
Sweeping Floors on Shabbos: Understanding the Concept Behind It;
Folding Garments on Shabbos, קיפול בגדים (Kipul Begadim). How הכנה (Hachana) Has to Do With Folding Garments on Shabbos;