I just got back from a selling trip. I walked about one block down the street to deliver a copy of Tales of a Texas Boy - Large Print Edition to a neighbor.
Last week, I posted flyers on the bulletin boards located on the mailbox kiosks in the 55+ manufactured home park where I live. I attached business cards to each flyer so nobody would have to remember the information when they get home. I should mention that the narrator, Eddie, is my father. The book contains mostly true (think Tall Tales) stories about him. My parents live across the street from me.
I got my first sale from this strange marketing technique. Of course, I also received a tour of the lady's garden when I delivered the book. That was a definite bonus. Her husband, like my father, is losing his vision. He can still read the large print editions, so my neighbor thought it was nice that she could get a book written about a man she chats with often.
Think global, sell local. Your best customers might be living right down the street from you.