I currently have 3-4 friend who have not logged in-game for 1-2 weeks (maybe more, can't really tell).
Whenever I try to help his castle, there is no building that needed help.
I was thinking, what if instead of helping him by doing manual labor, I could help him by ordering his production buildings to cash in on his/her resources?
Example: All farm is at max, I can order his farmer to get the coin, put it in my friend's bank and his farmer can now restart his farming production.
I then get 5 assist point. My friend get his storage fully stocked if in case he decide to return playing.