A great friend told me about a website where you answer trivia questions for fun, and every correct response you give earns free rice for starving people!
So close that pointless solitaire game you were playing and go to https://www.freerice.com. You start donating the rice by taking the vocabulary quiz in the middle of the page. If you want to change the category of your questions, click ‘subjects’ at the top of the page. You can do math, language, chemistry, geography, all kinds of subjects.
If you’re the type of person who enjoys this kind of thing, why not learn something while helping to feed starving people? Win-win!