Though I liked the wreath when I first made it, it is much more interesting now that my brother incorporated LED lights and an arduino code to make it play "Jingle Bells." To get the code he wrote as well as some read through instructions on how to get started, click here. Some basic info on the project, in his words:
"To make a similar project, on your breadboard, wire two LEDs in series on each Arduino out pin called in the "LED PIN" array, and include a 330 Ohm resistor on each pin circuit to ensure that you stay under the maximum current draw for each pin. The piezobuzzer is wired as usual, and the pushbutton has a pull up resistor to prevent any erroneous 'low' signals. "