Bargain search results - ZDY Invisible Ink:

ExpiredZDY Invisible Ink Pen,Spy Pen Invisible Disappearing Ink Pen with Light Magic Marker for Secret Message and Kids Party Christmas

$17.92 $27.09 Save 34% @ Amazon Australia

HOW ARE THESE MADE? The caps each have a light in them with a paper tab to remove when it is time to use one. The top has a little light in it that if you press a button on the side, the light goes on. The pen its... show more