I googled "good deeds for kids" and "good deed advent calendar" and "random acts of kindness for kids" to compile this pretty fabulous list of giving.

Please feel free to leave any of your own great ideas or finds in the comments section, though, so that we can keep this growing:
  1. Bring in a neighbor's garbage bins
  2. Write a letter to a far-away family member
  3. Open door for those behind you all day long
  4. Leave 3 kind notes for your sibling in places they'll find them
  5. Take extra dog food or treats to a local animal shelter
  6. Box up 5 toys in good condition for donation
  7. Write a letter to a soldier
  8. Choose a gift off the school/grocery/church giving tree and use your own saved money to purchase it
  9. Write a letter to a friend you don't play with everyday and mail it
  10. Bake cookies and a homemade card to take to a senior center
  11. Walk around your neighborhood/school/park and pick up trash/recycling
  12. At the school or town library, turn as many books as you can to spine side out on the shelves
  13. Give a hug to someone who looks sad or upset today
  14. Make your teacher a thank you card just for being great
  15. Sit with someone new at lunch today
  16. Make popcorn balls for your class/troop/club/church group
  17. Donate 3 of your favorite books to the library
  18. Write 5 holiday cards to deliver to a local nursing home or hospital
  19. Send thank you cards to the police and fire stations
  20. Give flowers to someone you don't know very well today
  21. Sort and deliver bags of gently used clothes and shoes for donation today
  22. Cash in all your pennies and donate them today (collection jars in stores/charities/animal shelters, etc)
  23. Give the best-decorated house in your neighborhood a thank you card and treat
  24. Smile and say hello to every single person you pass by today
  25. Leave out birdseed and peanut butter sticks/balls for the birds and squirrels
*we intentionally did not include daily household chores (like picking up after pets and making beds) because those should still be done regardless, and because these good deeds are to help the kids look outside of their own little world