To install a floating office with all the standard cubicle comforts – printer, copier, scanner and fax – requires a combination unit. They are small and do it all. But with so many models to choose from, selecting a unit can be difficult. Here are five models, all well recommended on consumer web sites, to get you started. Each is small enough to fit comfortably, even on a modest-sized boat. From there, let price and function be your guide. And don't forget to buy ink cartridges.