Opportunity is constantly knocking at the door in San Andreas, or rather, knocking at your neighbours door. But who needs house keys right? When you can just 'invite' yourself in and make yourself at home and perhaps 'borrow' some of their items without any guarantee to return them to make money.
Needless to say the PD isn't amused by your creative ways of making money and you can be sure they will try to stop your shenanigans. You will need to load the items into a conspicuous van and drive to the lockup to get payed!