Have family and friends write messages on balloons and mail them for a birthday surprise. (Instruct everyone to blow up the balloon, write a message, sign it, deflate it, and mail. This way they have to inflate the balloon to read the message)
Remember: Doing Nice Things for your family is just as good as for strangers. Don't tell them about it- just leave it for them to find. A sweet loving message or a thank you or an encouragement. Any kind word is good. The Art of the Surprise Note .