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Spooky STEM Halloween Sale

Our Deals Are Scary Good!

This Halloween, save up to 35% on STEM kits that let you build your own electronic monsters, creepy sounds, and magical gadgets. Shop now... if you dare!

Get a gift with every bundle
    %

    exclusive

    Ultimate STEM Bundle
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    Ultimate STEM Bundle

    Go from beginner to STEM expert with every CircuitMess kit out there

    Number of projectsx19
    Free tools iconfree tools
    $1,199.00
    $1,669.91-28%

    bestseller

    Clockstar 2.0
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    Clockstar 2.0

    Build & code your own smartwatch and connect it to your phone

    $99.00
    %

    new

    Beep Boop Bundle
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    Beep Boop Bundle

    Get all four Beep Boops for a special price

    Number of projectsx4
    $115.00
    $156.00-26%
    %

    exclusive

    NASA Artemis Watch 2.0
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    NASA Artemis Watch 2.0

    A programmable, NASA-themed smartwatch with activity tracking & more

    $115.00
    $129.00-11%
    Synthia

    Synthia

    Build & code an all-in-one sampler, drum machine, sequencer & synth

    $149.00

    bestseller

    ByteBoi

    ByteBoi

    Assemble a retro DIY console, play pre-loaded games, and code your own

    $159.00

    bestseller

    Chatter 2.0
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    Chatter 2.0

    Build & code your own encrypted communicators

    $149.00
    Wheelson

    Wheelson

    Build and code a self-driving, AI-powered robot car

    $169.00

    new

    Beep Boop Kirin
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    Beep Boop Kirin

    Inventor Beep Boop - your digital pet for techy mini-games

    $39.00

    bestseller

    Jay-D 2.0
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    Jay-D 2.0

    Make your own DJ mixer and learn about digital sound production

    $169.00
    %
    Epic Gaming Bundle
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    Epic Gaming Bundle

    Empower tomorrow's innovators through engineering, coding & gaming

    Number of projectsx6
    $619.00
    $884.00-30%
    %

    bestseller

    Retro Bundle 2.0
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    Retro Bundle 2.0

    Build your own retro console & communication devices

    Number of projectsx2
    $199.00
    $238.00-16%
    %

    bestseller

    Wacky Friends Bundle

    Wacky Friends Bundle

    Includes retro console Bit, 9 Mini-Bots, and 10+ unique games

    Number of projectsx10
    $399.00
    $530.00-25%

    new

    Beep Boop Miao Miao
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    Beep Boop Miao Miao

    Stealthy Beep Boop - your digital pet for tricky mini-games

    $39.00

    bestseller

    Bit 2.0
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    Bit 2.0

    Learn electronics and programming with this must-have DIY retro console

    $89.00
    Bob

    Bob

    Create a robot that lights up and unlock a new game for your Bit

    $49.00
    Artemis

    Artemis

    Learn about decade counters & potentiometers, plus get a Bit game

    $49.00
    Buttons

    Buttons

    Explore electronics & create sound, plus unlock a unique game for Bit

    $49.00
    Capacitron

    Capacitron

    Learn about capacitors & LEDs, and unlock a unique game for Bit

    $49.00
    Hertz

    Hertz

    Hertz teaches sound & oscillation, and unlocks a unique Bit game

    $49.00
    Marv

    Marv

    Build Marv, learn pushbuttons & counters, plus unlock a new Bit game

    $49.00
    Robby

    Robby

    Robby teaches sensors & electronics, plus unlocks a game for your Bit

    $49.00