Introduction to the Concept of ממצוא חפציך (Mimtzo Cheftzecha);
opening Up a Loose Leaf, "My Key Is Bent, Could I Bend It Back in Shape?", and Fixing a Safety Pin;
Is One Allowed to Press the Button on a Fan to Control the Oscillating (Turning Back and Forth) Cycle on Shabbos? Using Water Vaporizers...