In the seventies I took my family to Disneyland and discovered that I had lost my wallet. I literally ran across the entire park to where I had it out last. The girl in the booth was looking through it as someone had turned it in and I told her that it was mine. She asked me about identification and I told her to look at my driver's licence picture and she gave it back. It really gave me reassurance that people were still honest and it was a lifesaver as I had no credit card in those days and all the money I had was in that wallet.
When I was going through some hard times, the person behind me in the grocery line took care of my remaining balance that I didn't have. I truly grateful that there still are nice people out there.