Do something WITH a neighbor instead of FOR a neighbor. Eat, serve another neighbor, walk...
Do you have more than you need? Is your freezer full? Has your garden produced too much? Give it to a neighbor.
Go to the same places at the same time for groceries, haircuts, coffee, shopping, etc. Get to know one person!
Be aware of nudges from God. When he nudges, listen. When you hear him, obey. God is the best neighbor.