Searching the Sketchup 3D Warehouse for 'Bauhaus' returns a mixed bag of Bauhaus-inspired furniture, Bauhaus architecture, and a few utterly bewildering results, but there may be something there you can use. Typically, the Collada file download can be imported directly into SH3D, or if necessary one of the Sketchup versions can be opened in Sketchup, tweaked, exported as a Collada (.dae) or Google Earth (.kmz) file, and then imported into SH3D.