Glowing USB Rocks

This is what gave me the idea for this but I didn't have any resistors and didn't want to drive 5 minutes to the nearest hardware store. I didn't actually take any pictures of my work so I got to go with diagrams and a finished product video.

Step 1 What You'll Need

You will need to get the following parts and trust me, it's pretty bare bones. The parts for the light itself can be left up to your imagination. I know I'm going to get chewed out for not using resistors but think about it, rgb led's require voltage range of 3.3-5 volts each (depending on their current color) so wiring 2 in series would require more then 10 volts in order to start to worry and since usb can only carry 5 volts you're definatly safe.

Electronic Parts
1. 2 5mm rgb color changing led's. You can normally find them easily and cheaply on your favorite auction site.
2. USB cable with a male type A connector on at least one end.
3. Thin wire.
4. Heat Shrink Tubing or Electrical Tape.
5. Hot Glue or Silicone (optional)

The Magic
1. Lots of rocks with 2 being semi-clear so the led's can shine through
2. Container of your choice

Tools
1. Soldering iron and solder.
2. Wire cutters/strippers.
3. Heat gun or similar (optional) if you're using heat shrink tubing.
4. Small metal file and/or drill
5. Scissors.
6. X-Acto Knife