This Arduino kit ($85) from Seeed Studios includes an Arduino and a bunch of components, plus a 25 hour course on basic Arduino concepts.
Includes:
1 Arduino UNO R3
75 premium jumper wires
1 type B USB cable
1 9V battery clip
1 5mm diffused RGB LED
1 Piezo sensor – minisensor 100
10 5mm red LEDs
10 5mm green LEDs
1 10mm blue LED
1 Toy DC motor
1 9g high sensitive mini sensor
1 74HC595
1 buzzer x1
1 1M resistor
2 pushbuttons
1 potentiometer (10K)
1 light sensor (5528)
TMP36 x1
1 relay (5v,3A/120VAC)
2 P2N2222A
25 560 Ohm resistors
3 2.2k Ohm resistors
3 10k Ohm resistors
1 220uf capacitor
2 1N4001
1 breadboard
1 male pin header
4 plastic rivets
1 acrylic holder
4 rubber bumpers
13 color breadboard layout sheets
Full color printed Experimenter’s Guide