Blink any color you need! Use the Tri-Color LED board as a simple indicator, or by pulsing the red, green, and blue channels, you can create any color.
Handy single-turn 10k trimpot with friendly knob is prototyping friendly!
The 74HC595 is very useful in expanding how many pins a microcontroller can write to. Use 3 to write to 8!
This is a simple slide switch for the LilyPad. Use it as a simple ON/OFF switch, or to control LEDs, buzzers, sensors, etc.