The uC Hobby blog reviews six types of prototyping boards including a phenolic 0.1 grid prototyping board where the user cuts the traces as needed to separate pads. Another interesting prototyping board has break-away corners that turn it into a circular board; maybe just what you need for your little, round robots. A related article in the YourITronics DIY electronics blog describes the process of making your own photo etched printed circuit boards using a Canon Ink-jet printer. It offers plenty of photos and step-by-step help on going from PC artwork to an etched and drilled pc board.