ADA TWIST, Scientist Light and Reveal Pen with Invisible... Price: $7.79 (as of 11/04/2023 00:11 PST- Details)

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Whether you’re shopping for a kids toy as a Christmas gift, birthday present, or just because, the Ada Twist, Scientist Light and Reveal Pen makes a wonderful surprise!
This Ada Twist, Scientist pen features lights, phrases, and music and includes a notepad kids can use to write secret messages. Press the button on the pen to hear Ada sing the “The Hypothesis Song”!