A quest about planting seeds - hear me out.
It could be activated by the game checking if crops are planted at the "orphange", your base, and maybe Steven's Ranch (if you are able to access the crop place in the future); along with you selling an amount of seeds and/or vegatables at your base (the specifics can be made less or more specific to make it more or less likely, but I feel like you should plant crops at other locations other than your base(s) and sold an amount of seeds)
After a random amount of days (like 5-7 but could probably be sped up by selling more seeds and vegatables) a special trader could come to a seed or vegatable stand and be able to be engaged in conversation which could go something a little like this -
Special Trader/ST -"Yo man! I heard you be selling seeds and planting crops all round here - I'm not having to worry bout food as much cause all the stops have it"
You - "Okay?"
ST - " I just had to come and thank you dawg, bout died three times from people bein' too stingy with their veggies, glad someone is makin' it to were they don't have no excuses for letting this dude starve"
You - "Okay?"
ST - "Yeah man its been nice now"
You - "And?"
ST - "OH, bout forgot! Just wanted to let you know I've been able to set up a [trade/rest stop/bar/carvan] place [east/south east/ south] of here that you can [trade at/refill your strength at/learn how to brew and cook at/find deals at] and chill for awhile."
A place could then show up/be found on the map that "ST" is over, could be a bar that you learn to brew a drink at or learn a recipe (if it is added), be able to find temporary deals at (like traders or traveling shop owners), or be able to completely refill your food and water at. I just think this would be a nice addition to 1. Be funny (cause some rando be like "thanks for all that food over the place, now I can have a shop without worrying bout starvation and that jazz", 2. Reward you for your generosity of planting crops at peoples places, 3. Potentially being really useful for adventures, traveling, and/or building and 4. Being in the grim comedy circle like the rest of the game (guy about starved to death three times, but is also telling that to a random stranger that planted crops)
A problem with this might be that the setup is too vague (planting crops at others peoples base), I actually done this in my first playthrough of the game (cause I'm weird) but a few hints might make up for it (like the caretaker at the orphanage saying "man I really need crops, luckily the indestructable child don't need them.") (also the dialouge of ST being a bit long)
I think it would be nice and fun (and something cool you could sorta stumble on without a clear mission marker saying to "plant crops at so and so and also sell seeds")