Author: Ben Kassoy, Editor-in-chief, DoSomething.org

For the 2.5 million kids living in homeless shelters, a birthday doesn't always mean a celebration. Lots of shelters don't have the resources to provide things like cards, presents or cake.

Good news is, you can make sure kids feel valued and loved on their big day! Sign up for DoSomething.org's Birthday Mail campaign, powered by Johnson & Johnson. 

You'll learn how to make thoughtful, creative cards and send them to a shelter near you. You'll join a movement of thousands of others taking action also– in 2014, DoSomething.org members created over 110,000 cards through Birthday Mail!  

Celebs are contributing to the cause also. TV stars and dance prodigies Maddie and Mackenzie Ziegler starred in an ">adorable video to promote the campaign! 

Sign up to join the campaign and make sure every child gets to smile on their special day. (P.S. You could even win a $5,000 scholarship!)