Castaway Stories Story Rewards, Career Rewards and Aspiration Rewards, now available in barter mode.
Let me know if you notice any mistake (like an item isn't available in community or in residential, or if it's in a different section than what I mentioned below).

Download and installation: 
Go to the bottom of the post to download the zips you want, there's one for each category (Story/Career/Aspiration Rewards). Choose the files of the objects you want in barter mode and copy them in:
Documents\Electronic Arts\The Sims Castaway Stories\Downloads
(Or a subfolder inside it)
If you don't have the Downloads folder, create it. Don't forget the 'D' in upper case, or it won't work.

Where do I find them in game?
Expand the lists below to see in which section of Barter Mode they will appear (most of them are in the Fun section, I kind of used it as a default when it didn't fit anywhere :giggler.





WARNING
You can most likely break the story if you use the rewards earlier than you should, so... just don't do it, I guess. Using them in Free Mode should be safe, but as always, it's better to back up your game before getting CC.

If you want more unlocked items for Castaway Stories, I unlocked a lot of hidden items a long time ago: here