Go to a cafe or park with a list of people (and their addresses) and tell them what’s on your mind in the form of a handwritten note that you then MAIL to them… I like to prepare the envelopes ahead of time (complete with postage), so I can drop them in a blue collection box on my way home but you can literally do whatever you want!!! The important part is the act of communicating via letter of course
Leaving anonymous love letters, made up missed connections, public service announcements and more around parks, malls, etc etc. On paper stapled to something is preferable. Your community is dying and you can save it with a pencil and paper. Or ink and a printer, if you're technically inclined.