Helped my neighbor without being asked
Saw Bob out front trying to fix his fence in the heat and I just went over with cold water and my tools. Didn't make a big deal about it, just said I had some time. Got it done in a couple hours and we didn't talk much but he knew what it meant. That's what community used to be. That's what it should still be.
Cold water and tools on a hot day is genuinely kind. That's being a good neighbor without making it a big deal about it.