I finished the standup desk this weekend. The tabletop is a bit fancier than intended as I had two linoleum planks from a prior project. Also I placed my second monitor at the normal height so I could switch if I get tired. But I'm a bit stunned by the additional energy I'm experiencing since I stand. So I do not sit much anymore.
Also I found a German manufacturer with a nicer standup desk. They actually have two widths. The tabletop might not be deep enough to hold a screen, but it should be easy to exchange it for a bigger one.
Build your own table just like Kai's! He uploaded a model of the table to the SketchUp 3D warehouse.
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. Come and hear Mark speak at the ALA conference in Chicago on July 1.