Lifehacker reader bstone01 opted, after trial and error, to set up his office to easily accommodate an extra party or two:
After years of working at home and trying different spaces, furniture, set ups,etc. I settled on a dual work station set up. This allows me the flexibility to have co-workers, family, friends, etc share my space when necessary.
The layout of the desks, in addition to providing an entirely separate computer and workstation, also provide a great way to hide cable clutter—all the cables are routed through the space between the two desks. A scanner with a feed tray helps keep paper clutter under control, leaving the spacious desks for better use than holding up piles of yet-to-be sorted paperwork. Check out the pictures to get a better view of his office, including a nice top-down shot of the workspaces side by side.
The Dual Workstation Home Office [Lifehacker Workspace Show and Tell Pool]