People mentioned the idea of having 'missions' within oc's. Travelling to x country etc. I'd see the items in the oc the same way tbh. Dog treats can be obtained via robbery. You don't really need to buy them. The dog treats have value because they're not being sold in shops. If they were they'd drop again
I also like the idea of oc's being sustained through crimes and crime items being used and having value. There have been too many items introduced that have no value whatsoever. Credit cards, license, umbrella, towels etc. Be nice for them to be used somewhere and not just accumulate