Write a note with your contact details, and leave it at their door, to let them know that you are willing to help them if they need. Text them, or knock on their door to notify them that you have left something at their doorstep
Check in with your neighbors by simply dropping them a text (ask about their day, what did they cook? How are they feeling, etc.)
Have a video/voice call session and chat to them. Involve your kids!
Host online Iftars or chat sessions with your neighbors. (Similar to a block BBQ, but do it online via apps like zoom or skype)
