fade in: you're sitting in the library with your laptop. you look up from your 'spreadsheet' (which is really just a game of minesweeper) and notice something: the only Christmas decorations there are 23 paper wreaths taped to the windows (courtesy of Mrs. Cunningham's kindergarten class two doors down). you are saddened. you wonder if you even like Christmas anymore.
sadly, this happens to many people every year. so, what's a man (or woman) to do? well, I say, you already have a lappy, why not make a USB LED Christmas tree!
UPDATE: I recently changed out the base on this tree with a piece of a log. it makes a much better tree base.
Step 1: Attain materials
fake tree limbs
florist's tape (optional)
Step 2: Strip and cut usb cable
well, it's what it sounds like. use wire a wire stripper or scissors to cut and strip the usb cable (keep the end that plugs into your computer, obviously.) then strip the black and red wires inside of it. (if yours is strange and doesn't have black and red, you'll have to lick the wires to find out. go on, it's only 5 volts :))
Step 3: Solder leds to resistors
what I did was I took 8 leds and 8 resistors, then took each led's positive lead and soldered a resistor there. by the way, as I'm talking about resistors, a usb cable gives off about 5 volts. you'll know that if you were reading carefully in the previous step.
Step 4: Solder wires
now, get two long peices of different colored and insulated wire. solder one color to the resistor, and the other to the negative. you'll want to do this to all of them.
Step 5: Create base
now, take your cardboard. poke a small hole in it. then, cut a peice of clothes hanger and put it in that hole and secure with hot glue. once cool, poke a hole in the bottom of the cup. slide the cup over the piece of wire hanger so that the top hits the cardboard. then hot glue it in place.