There is a movement around, I forget what it is called, but the ethos is to just do a kind act once a week without expecting any payback of any kind.
I once bought some ice cream for some ladies sitting outside their shop on a hot day. They were very surprised and very happy. It cost me a pound but it was worth a fortune.

So, when I saw one of my collegues walking to work yesterday from her new place about a mile from the office, I thought she may appreciate the small folding bike I have laying in the back of my garage. I need to pop to the florist to get some ribbon just to make it look the part.

Please Anna, don’t fall off it!

:-)