"צביעה באוכלים" (coloring in foods) - the stringent view of some poskim
Understanding the Difference Between the Melachot of Choresh (Plowing) and Boneh (Building);
מחמת חסרון כיס Machmas Chesron Kis: Bottom Line on a Loose-Leaf;
Making a Bouquet of Flowers on Shabbos;