Send a card or note to a child who could use a little extra attention. Kids love getting mail.
Hold the elevator.
Drop a few coins in an area where children play, where they can easily find them.
Post something you no longer need on your local Craigslist for free.
Pass along a great book you have finished reading, or leave it somewhere for someone else to read.
Volunteer your time at a non-profit or charitable organization.
Bring donuts, cookies, or any other tasty treat to work to share with your coworkers.
Drop off a toy or game at a homeless shelter.
Give away a gift card that you don't plan to use
Volunteer to read to kids at storytime at the library or an after school program
Take time to enjoy the sunrise or sunset - because you need to be kind to yourself also.
Offer to help tutor a student who is struggling
Donate time or resources to your local food pantry
Donate gently used clothing to a clothing drive or local homeless shelter
Plan an entire day when you don't complain or criticize anyone