Send dessert to another table
Leave change in the vending machine
Pay toll for the person behind you
Give a gift card for a favorite cafe
Leave flowers for your neighbor
Leave chocolates for the waitperson
On a hot day buy someone a drink
Buy coffee for the person behind you
Give a cupcake on someone's birthday
Leave extra time in a parking meter
Always carry extra snacks for others
Send a nice thank you card
Put chocolates on a co-worker's desk
Plant a tree in your neighborhood
Treat a homeless person to coffee
Leave a flower/note on someone's car
Commit to doing an act of kindness each day, for 21 days.