Glow in the Dark Jumbo Magneatos - 36 pcs How do you make the multiple award winning JUMBO Magneatos and Magneatos Intermediate Series EVEN MORE FUN? You add a new element of fun and intrigue. Make them GLOW IN THE DARK! Guidecraft has added this extra element of surprise to both the JUMBO and Intermediate series. Kids will love the mystery of seeing their creations come to life with and exciting glow when they turn down the lights!