Donate time every day may it be 5 minutes, 10 minutes, 30 minutes ..

Time is money
Donate your time every day start as low as 1 minute.
You can increase time if you have free time
You can use this time to lots of work
1)Teaching
2)Listening other problems
3)Reading for others
4)Plant tree

I am not sure yet what others can be done
collect mobile number from others, whatsapp, or social networks friends list, email list
build the all interested people

spent time online, offline,  type of interest.
Support other ngo, social cause.