When your friends and family are scratching their heads wondering what yo buy you for your birthday, why don't you suggest that they make a donation to Hong Ning instead? Many of us already have more than what we need but a small gift towards the residents of Hong Ning would be a much more meaning gesture than any regular present.
You may also consider suggesting to your friends and family that you make a collective donation to Hong Ning for Christmas instead of buying presents for each other.