Ear Plugs, Examples of Strengthening an Item on Shabbos, Hairspray, Stretching Shoes, etc.
to clog a small crack in a pipe. Turning off gas range. Putting on, taking off smoke detector. Unscrewing the bulb that's off;
Cutting and eating all other types of fruits (e.g. oranges, grapefruits, cherries) and what to do with the leftover juices.