Buy ‘arduino’ with Bitcoin – Spendabit

Arduino M0 Pro - 32 bit Cortex M0 with Debug Interface

$39.95 at Adafruit

Arduino Compatible UNO Starter Kit (DIY Electronic Parts Category)

$94.95 at Gadgets Direct

Arduino Leonardo ATmega32u4 without headers

$22.50 at Adafruit

DHT11 Digital Temperature Humidity Sensor Module for Arduino

$1.80 at FastTech

BH1750FVI Arduino Compatible Digital Light Sensor Module

$1.47 at FastTech

Arduino Starter Kit from Arduino.cc

$99.95 at Adafruit

Arduino Mega R3 Android Accessory Development Kit (ADK) Board - ATmega2560 ADK R3

$84.95 at Adafruit

Adafruit METRO 328 Fully Assembled - Arduino IDE compatible - ATmega328

$24.95 at Adafruit

Expansion Board for Arduino Prototype Proto Shield

$2.65 at FastTech

4X Numeric LED Display Digital Tube Module for Arduino (Works w/ Official Arduino Boards)

$2.71 at FastTech

Patch shield for Arduino - v5.01

$19.50 at Adafruit

FLORA - Wearable electronic platform: Arduino-compatible - V3

$14.95 at Adafruit

Microphone Sound Detection Sensor Shield Module for Arduino

$2.37 at FastTech

Seeeduino Lite - ATmega32u4

$21.95 at Adafruit

KEYES KY-008 Arduino Compatible 650nm Laser Transmitter Module

$1.19 at FastTech

Arduino MKR1000

$44.95 at Adafruit

2.8" TFT Touch Shield for Arduino - 2.8"

$59.00 at Adafruit

Arduino Due - assembled - Due

$49.95 at Adafruit

Arduino YUN (YÚN)

$74.95 at Adafruit

Arduino Leonardo ATmega32u4 with headers

$24.95 at Adafruit

Clear Enclosure for Arduino - Electronics enclosure - 1.0

$15.00 at Adafruit

White Enclosure for Arduino - Electronics enclosure - 1.0

$15.00 at Adafruit

2.8" TFT Touch Shield for Arduino with Resistive Touch Screen

$34.95 at Adafruit

Arduino Zero - 32 bit Cortex M0 Arduino with Debug Interface

$54.95 at Adafruit

Sylvia's Super Awesome Project Book - Super Simple Arduino!

$14.95 at Adafruit

Beginning NFC with Arduino, Android, and PhoneGap

$34.95 at Adafruit

Plastic mounting plate for breadboard and Arduino - rubber feet!

$5.00 at Adafruit

Adafruit Wave Shield for Arduino Kit - v1.1

$22.00 at Adafruit

Music & sound add-on pack for Arduino - v1.1

$35.00 at Adafruit

Proto-Screwshield (Wingshield) R3 Kit for Arduino

$14.95 at Adafruit

Sous-vide powered by Arduino kit pack - The SousViduino!

$99.95 at Adafruit

Adafruit MENTA - Mint Tin Arduino Compatible Kit with Mint Tin

$35.00 at Adafruit

Arduino Duemilanove

$27.95 at Evil Mad Scientist

Gravity: 27 Pcs Sensor Kit for Arduino

$108 at ModMyPi LTD

Make: Bluetooth LE Projects for Arduino, RasPi, and Smartphones

$29.95 at Adafruit

Gameduino 2 with 4.3" 480x272 Display and Touchscreen

$69.95 at Adafruit

DIY Gamer Kit from Technology Will Save Us

$56.95 at Adafruit

Adafruit Motor/Stepper/Servo Shield for Arduino kit - v1.2

$19.50 at Adafruit

Keyes MOS Driving Module for Arduino

$1.62 at FastTech

Arduino Robot

$247 at Adafruit

FIBARO Starter Kit

Arduino Esplora

$53.95 at Adafruit

Arduino Uno Ethernet

$65.00 at Adafruit

Arduino for Beginners

$29.99 at Adafruit

Arduino 101 with Intel Curie

$39.95 at Adafruit

Google GA00823-US Nest Wifi AC2200 Mesh System Router 3-Pack (Snow and 2 Add-On Points)

DIY shield for Arduino

$6.00 at Adafruit

Exploring Arduino by Jeremy Blum

$39.95 at Adafruit

Mega protoshield for Arduino

$14.95 at Adafruit

Clear Enclosure for Arduino or Metro

$4.95 at Adafruit

Arduino Starter Kit

Motor party add-on pack for Arduino

$39.95 at Adafruit

Smoke Translucent Enclosure for Arduino - Electronics enclosure - 1.0

$15.00 at Adafruit

Adafruit Proto Shield for Arduino Kit - v.5

$15.00 at Adafruit

Adafruit Proto Shield for Arduino PCB - v.5

$6.00 at Adafruit

2.8" TFT Touch Shield for Arduino w/Capacitive Touch

$44.95 at Adafruit

Arduino Pro Mini 328 - 3.3V/8 MHz

$9.95 at Adafruit

Arduino Mega 2560 R3 (Atmega2560 - assembled) - Mega!

$45.95 at Adafruit

Learn Electronics with Arduino - by Jody Culkin and Eric Hagan

$24.95 at Adafruit

Arduino Uno

$29.95 at Evil Mad Scientist