The Prop Plug is a compact USB to Serial connector for microcontroller programming and communication. We're about the best place in the universe to get them!
Ever need a convenient way to log 4 channels remotely, and don't have a lot of time to mess around programming up your own? PICAXE to the rescue!
With the GPS Shield you can add GPS functionality to your Arduino.
Just need to make some motors move with your Arduino? Here's a simple way from SparkFun - the Ardumoto!
The Voice Shield™ (VS) is an analog audio shield for the Arduino that allows you to play audio sound byte.
This is a 7-segment shield for Arduino NG/Diecimila/Duemilanove and many Freeduino boards.
The Joystick Shield sits on top of your Arduino and turns it into a simple controller. Control man, get some CONTROL! (PCB only - buttons/components not included)
The Atmel ATMega168 is the heart of the popular Open-source Arduino microcontroller project. If it's good enough for them, it most likely can manage your project too!
This unit is a higher-capacity version of the ATmega168 - more than TWICE the flash memory for sketches (30K available instead of 14K), TWICE the RAM (2K instead of 1K), TWICE the EEPROM (1K instead of 512b)