DEV-09760 The SparkFun Joystick Shield Kit contains all the parts you need to enable your Arduino with a joystick! The shield sits on top of your Arduino and turns it into a simple controller. Five momentary push buttons (4+ joystick select button) and a two-axis thumb joystick gives your Arduino functionality on the level of old Nintendo controllers....
DEV-09729 The ScrewShield extends all pins of the Arduino out to 3.5mm pitch screw terminals. It also has a lot of the utility provided by Arduino Protoshield, including: a large prototyping space of both connected and unconnected 0.1" spaced through-holes, a couple 5V and GND busses, a reset button, general use push button, and a 5mm yellow LED.
DEV-09709 This is a small prototyping shield for the Arduino Pro Mini. If your project requires just a little bit more space for your external circuitry, this might be a perfect addition. 38 unconnected PTHs are provided for your prototyping needs.