* LED (any color)

* 2 coin cell batteries

* Battery holder

* 2 pieces of wire

* Tape

* Scissors

Instructions:

1. Cut two pieces of wire, each about 6 inches long.

2. Strip the ends of the wires about 1 inch.

3. Connect one wire to the positive terminal of the battery holder and the other wire to the negative terminal.

4. Tape the battery holder to the back of the LED.

5. Bend the wires so that the LED is pointing up.

6. Tape the wires to the sides of the LED.

7. Enjoy your firefly worm!

Tips:

* You can use any color LED you like.

* You can also use a different type of battery, such as a 9-volt battery.

* If you want to make the firefly worm more realistic, you can add a small piece of tissue paper to the back of the LED.

* You can also add some glitter to the firefly worm.