Just a simple gesture of everyday kindness. On a whimsical rainy day of your own choosing, with a group of willing and thoughtful people, set out with an umbrella or many umbrellas in hand and be the savior of dryness to poor souls in the streets uncovered and drenched. Work your way through the rainy sidewalks offering cover with your umbrella to strangers getting pelted by rain. Provide them with cover and stroll along with them safely under bumbershoot. Make happy conversation and offer shelter. Do this with a team of people out and about your city for even grander results.