The Adventures of Teddy Ruxpin

The Crystal Book (1x27)

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The Trio and Fuzz discover that the crystals can be made to identify a quality of whoever is holding one of them. Gimmick is identified as "inventive", and it sets him on an inventing spree. Meanwhile, Eleanor, Jack, and LB head back to the Tower. LB and Eleanor send Jack to try swindling the Trio, who use one of the crystals to outsmart him.