If you don't know your neighbors, it's a good idea to organize a get together (it makes the neighborhood safer). You could start with a neighborhood watch - check with your local police department.
When I lived in California, many years ago, a neighbor and I took questionnaire's to each house on our street with questions such as names, birthdays, favorite recipe etc. Each month (before e-mail was popular) we printed a newsletter with a recipe, information about the neighborhood, warnings of suspicious behavior (such as an unidentified car seen on several occasions) events, birthdays etc. (not everyone wished to participate but we had a large number that did). Twice a year we got together for a potluck in someone's house/garden or at the park. Two houses were designated as safe house (women who stayed at home during the day) and this was invaluable when we had an earthquake and children were coming home from school (they went to the safe houses if their parents were at work).
We also borrowed from each other and lended a hand when a tree needed to be dug up or furniture moved. We had no set rules on borrowing but it might be an idea to set up some criteria, such as perhaps borrowing for only 24 hours at a time. First ask neighbors to list what they are willing to lend. It might be a garden tool or perhaps a sewing machine.