This add on will light up the inside of the ocarina various colors.
Now who doesn't like to light up things with LEDs?
Step 1: Tools and materials
a High-Brightness 7-Color 5mm Blinking LED from Radioshack Catalog #: 276-016
a momentary push-button switch
some medium CA
drill and drill bits
a 3.3V lithium batter (WARNING DO NOT SOLDER STRAIT ON TO BATTERIES, YOU WILL BLOW YOUR SELF UP)
1 1/4" SCH PVC cap