fixing a Hat, Dust on a Hat, a Dent in an Aluminum Foil Pan, Plastic Fruit Cup, and Shaking Down a Thermometer;
Is One Allowed to Drown Insects on Shabbos? Killing an Insect in Life-threatening Situations;
Playing Basketball or Soccer Outside and Rolling Items on a Covered Ground (e.g., on a Carpet, Mat, Board, etc.);