DON'T JUST... say Thank You to someone who has found something you lost. Also say thank you another way. Agree with your savior-finder a Charity and donate something. I lost my iPhone recently and did just that. Sense has always been close to my heart - I cannot imagine the courage of those who are Deaf as well as Blind.  Of course you can decide on another charity of your choice - it's up to you.  You could write a bit of chatter about your lost and found story.  Even if it’s a small donation…IT ALL HELPS.  Thank you  :-)