Adafruit offers for sale a small kit to improve the Raspberry Pi. It provides a small PCB and cable to the DIY module for $7.95. This kit that plugs into the 26 pin port is a custom PCB that connects a bunch of devices solderless.
Adafruit informs that in less than 15 minutes you can create a real working prototype by following the provided tutorial.
You may get more information at adafruit.com.