Check a womans purse. Knick knack central.
I suppose you are an American and refer to a handbag, right?
Well, I am no woman, but I also have kind of a handbag. And it also is Knick-Knack-Central!
- a refree's whistle
- pencils and ball point pens
- analogue calendar
- chewing gum
Edit: Sorry for taking it off-topic - couln't resist...
I don't think its off topic at all. Its exactly how you should think about knick-knacks. Over half that list has a direct correlation to a PC in a game (tissues, pencils, rosary, etc). Things like phone could be "calling cards", address book, or even a coupon book for courier services, etc.
As an aside, E.G. Gygax developed a game called "Dangerous Journeys" that had as its monetary system a neat little trick. Money was a "B.U.C" or Basic Unit of Currency. A cheap used, mostly reliable, car costs about $2000 in the US. That would equate to 2000 BUCs. In a fantasy setting, a cart, wagon, carriage, etc is similar to a car (with the horse and tack) so a cheap, used, mostly reliable carriage might be about 2000 BUCs. In that fantasy setting silver might be the Basic Unit of Currency therefore 2000 silver for the carriage. Not perfect, sure, but a nifty 1st approximation.