I am thinking about a computer that could go anywhere in the home or office. What do people like to dress up their home or office with? Plants!
This is a quite large plant, but it could be in many styles, or sold in just the base, with the bottom half innards of the plant pot made into a computer, with a base put on top of that for a plant of the customers choice. Fake plants would be recommended, so as not to get water on the computer components.
A nice pot and the supplies to mod it would probably take about $50-100, leaving $400 for the CPU, RAM, HDD, PSU, and Optical drive. That should be pleanty to make an awesome computer that any housewife wouldn't mind having in her living room or den.