But even smaller objects like keys are often returned to their owners — it all depends on who finds them and to what lengths these people are willing to go to ensure that lost items are returned to their owners. If your lost item is found, must you pay a ‘finder’s fee’? Also, if the process of finding out who the lost object belongs to and returning it to you generates extra expenses for the finder (such as train fare or other travel costs, for example), you have to reimburse these expenses in addition to the reward.