One of the more difficult issues when building a new home is visualizing that home in 3D. Well The Plan Collection has done something about that:

http://3dprint.com/1452/plan-collect...nt-blueprints/

They will be giving away 3D print files with all designs purchased. Customers can than print out a 3D model of their home at home, or at a local 3D printer shop. So far this is available for just one model, but over time they will make available 3d models for all models on their site.