Adafruit Industries

Limor Fried's (Ladyada) company sells interesting kits and parts.

Projects / Products include
Arduino, AVR Development, BoArduino, Breakout Boards, Clocks, Digg Button, Drawdio, Fuzebox, Game of Life, MiniPOV, MintyBoost, Power supply, SIM reader, SpokePOV, TV-B-Gone, Tweet-a-Watt, XBee, YBox2