One section of my dorm room lacked adequate lighting. I decided to install my own LED lights and customize them with an Arduino. I created and soldered a circuit using buttons to control the pattern on the lights. I wrote code for this system in C++. The lights have seven color combination options white light, blue light, green light, red light, a still rainbow, a fast rainbow, and a slow moving rainbow. When the black button is pressed, it cycles through these color options one at a time. The white button resets them to white light.
A video of the lights in action. The label "Scary Place" was assigned by the room's previous residents due to the lack of lighting - not so scary anymore!