Something that I did with a couple of friends a year or so was pick beautiful flowers from a local park and give them to those who passed by.
A highlight of this was when we gave a rose to a lovely elderly man who always passes by the park. He lifted his head a uttered a hugely grateful 'thank you' as he placed the bloom into his chest pocket. It filled us with the most heart warming feeling. I will be sure to do something like this again. It is a memory that is etched into my brain!