I eyeballed a Starbucks gift card in it's little envelope while out metal detecting. Since it was in its little envelope/package, I picked it up and later checked on line to find that it was a valid $25 gift card. Sold it to my business partner for $20 since I don't drink coffee and never go into Starbucks. Gas was most certainly covered for the next several outings.
I found a mans wallet on the onramp at Youngfield and I-70 EB here in Denver metro. It was chock full of credit cards and his ID, etc., but only one dollar in cash. I was able to find a phone number for him and called. He was glad to hear from me and after I mailed him his wallet with entire contents undisturbed, he mailed me back a $20.