The Proto ScrewShield for Arduino extends all pins of the Arduino UNO out to 3.5mm pitch screw terminals. It also has a lot of the utility , including: a large prototyping space of both connected and unconnected 0.1" spaced through-holes, a couple of 5V and GND buses, a reset button, general use push button, and a 5mm yellow LED.
The Proto ScrewShield v1.5 from Sparkfun includes all the parts shown. It comes in kit form and must be soldered together by the end user.
ScrewShield v1.5 Kit Includes: