Every year, do a spring virtual cleaning. Clear yourself from social media for one week. Only communicate through analog means.
Buy a pack of seeds for you and another person somewhere in the world. Plant them at the same date and time.
Watch them grow, gradually, over the years.
Walk into an office and place in each employee’s cubicle a post-it note filled with positive thoughts. Do not reveal yourself.
Collect a pile of memorable words and phrases. Mail them to people you don’t know. Ask them to attach the word to a picture.