$15-$25

   

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  1. Ballista

    $24.95

    Build a ballista and experiment with aiming and launching!
  2. Color-Mixing LED Crystal

    $24.95

    Make a color-mixing LED crystal and explore the physics of color!
  3. Rainforest

    $24.95

    Transform a caterpillar puppet into a butterfly, build a rainstick, and play a stacking tree game.
  4. Wind

    $24.95

    Learn about wind with a wind-powered car, DIY windsock, and weather chart.
  5. Light-Up Wings Costume

    $29.95 $20.95

    Craft a pair of shimmery, electroluminescent fairy wings that you can wear! Fairy and Butterfly-approved.
  6. Birds

    $24.95 $18.95

    Have fun with birds! Design your own colorful bird wings and pretend to fly away. Complete the look with a bird mask with interchangeable beaks. And then mold your very own clay bird friend.
  7. Pendulum Power

    $24.95

    Learn all about pendulum power! Build a linkage system that makes two watercolor birds move, and a game where hungry animals chomp on beads.
  8. Probability

    $24.95 $18.95

    Learn about probability power with a coin toss experiment. Then engineer a spinning probability machine that gives out random results. Use it to play games, create abstract art, and even find out a superhero animal name.
  9. Phantom Projector

    $24.95

    Make your own optical illusion! Engineer a projector box in which a translucent ghost mysteriously appears with the push of a switch. Then use the blank illusion cards to make your own vanishing pictures.
  10. Printing Press

    $24.95

    Engineer your very own printing press, complete with stamping plate and handy lever. Use your press to quickly whip up a series of picture-perfect print. Then design your own reusable and recustomizable stamps.

   

Showing 21 to 30 of 97

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