A tiny gesture made my day ...

I have been extremely cross because of the events of yesterday, but when I received this small token from someone, it made my day. Who gave this to me? No one I have blipped before, not a friend, not a family member, not an acquaintance, not a student ...Then who gave me this?

This was given to me by the security guard who sits at the entrance on my building. A few weeks ago, I blipped the money plant he had on his desk. When I said I liked it, he said "Maam, I will get one for you too" and today he did.