I really ran out of ideas for names, so here are some links hope you'll understand what they are:
A RGB led and a yellow LED flicking to try and imitate a candle.
Servo motor turns to 0 degrees then 180 degrees repeatedly
Changing the position of a potentialmeter changes position of the servo motor.
A PIR detects motion, when motion is detected the LED lights up.
Ultrasonic sensor detects how far a object is from the sensor and lights LEDs, more LEDs lit = closer, less lit = further.
The light dependant resistor tells the arduino how much light there is, below a threshold, a LED will light up.
Just flashes random colors nothing more.
LED chase effect.
Attached a lot of batteries to a lamp..