Great for father's day too! These have an incredibly high converting rate:

Personalized Date In History Book:
http://www.nytstore.com/ProdDetail.aspx?prodId=29907

Front Page Framed Reprint:
http://www.nytstore.com/ProdDetail.aspx?prodId=673

Yankee Stadium Final Season Dirt Crytal:

http://www.nytstore.com/ProdDetail.aspx?prodId=26761

Dave