My parents in Japan always used to prepare hot green tea or cold “Mugi-cha” to people.
Also my nice neighbor used to bring her homemade sweets to my family.
These experiences taught me that showing applications and love to neighbors and enjoy chatting like that simple way really helps to keep having a good relationship.
I sometimes bring my favorite breads from village baker in Bend to my neighbors of our store or make something treats to nice neighbors of our house. I really appreciate people who are understanding and supportive are in my life.