David Masse (masse.org) has been collecting Google Doodles since 1998. He has been printing and cutting them out and creating 3D sculptures of them over time.
David shared his art in the Google Web Search Help forums the other day. I wanted to make sure everyone got a chance to see them. Here they are:
Even one of them contains a picture of Dennis Hwang, Google's doodle artist.
Forum discussion at Google Web Search Help.