I would return too cause I also believe in karma.... My daughter dropped her wallet about six months ago and of course she had just got paid in cash and that was her rent money. She also had all her ID and (stupidly) her SIN card ..... Well fortunately she is broke and has not established any credit yet so when the people tried to take out a loan with her ID they were denied. She phoned that credit company (can't remember the name) to report her stuff being stolen so they would flag it and she was lucky she did .... The bank sent a "refusal of loan application" in the mail and this was how she figured out they tried to use her ID. A police officer called my house to say her wallet had been turned in about a hundred kms from where we live ... Of course all the money was gone but the ID was there but useless at this point as she had reported it stolen.....she learned a valuable lesson that day .... So yes I would return anything I found ..... I wouldn't be able to live with myself