In Chapter 21 of Stargirl, what are three things which inspire Stargirl's random acts of kindness?
Stargirl uses information she gleans from the newspaper, particularly parts of the paper others generally don't read, posted notices, such as one would post if looking for work, and gossip she hear at the beauty shop. She tries to figure out what the individuals in question might be going through, then determine what kind of card the person might like to receive. She also drops random bits of money as they walk around, never a whole lot, but enough that she can enjoy imagining the pleasure a child might feel upon finding it. Contemporary connections or similarities one might be reminded of include the movie "Pay It Forward", which evoked the theme of randomly doing for others, and one might also be reminded of the late Larry Stewart, who became famous in the Kansas City area over the years as he would dress up in a Santa outfit and wander aimlessly around the poorest parts of the city handing out hundreds of thousands dollars.