I think you’d get the most people interested in a flex-protoboard, or a mini flex-arduino.
A flex-protoboard would have a rigid section in the middle big enough for a DIP, and rigid sections wide enough for one row of headers each on the sides. The traces connecting the rigid sections would be made of a flex circuit. Like this: http://flic.kr/p/eCQS7H
A flex arduino could be similar, a central rigid board with the ucontroller, resonator, and power regulator in a line on a narrow pcb, and rigid boards on either side with header sockets all connected with flex circuit.
One nice thing about both of these ideas is that they could modular, in the sense that you make a roll of flex circuit with following layout: header, header, dip, header, header, header, header, header, dip, header, etc. And the you could use scissors to trim the roll to the dimensions you need. You could also use a razor to isolate sections of headers, like you’d do with one of these: https://www.sparkfun.com/products/8812