Suggestions on where to donate baby bottles?

Quick question... our LO was suffering from gas, so after about a week and a half we switched our bottles from Avent to Dr. Browns. Therefore, I have all these Avent bottles that are like new and would love to donate them... does anyone know if there are any charities or support programs that I can donate them to?

We all know how expensive having a baby can be, and I would be happy to give them to an organization that assists those in need... I am just not sure where to start.

 BTW, I live in Alexandria.... thanks!!