Could there be an item, where you could leave a note?
Simply some place, where I could leave a few words for my teammates, or for future me. Like "took this, brought that, borrowed a car, will return, won't return, need help with, ..." Also, usually I don't remember what I was doing last time I played, so I'd appreciate a thing like this for myself too. Of course, it's quite easy to use mails, sms or whatever to make up for these notes, but I think the game experience would be the best, if as much features as possible would be done through the game itself...
I don't suggest anything fancy, just say some wood and fibers at a table to fix a book, than simply use it to be able to write in it.
