What does it mean to be a good neighbour?
I think a good neighbor should be friendly but not over friendly. You shouldn’t barge in on your neighbours lives or homes and you should respect their privacy. You should wave and smile and greet them when you see them but their waves and smiles back aren’t an invitation for you to go and hog their couch for the next 2 hours.
Buy or make food after you check and see their dietary preferences. The last thing you want is to make them feel guilty for food going to waste. Especially food that they spend time preparing. And don’t over do it either. Once or twice a month is fine but anything more than that is overkill and they may not be the kind of people who make a lot of things themselves and now they feel like they owe you something.
Be supportive and encouraging but you are not family. Help without asking or expecting anything back. Don’t be too affectionate towards their children – they are not your own or your nieces/nephews – but treat them like you would want their parents to treat your kids.