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Watch Richard Hammond's Crazy Contraptions online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.

Engineering enthusiasts from around the UK must battle to create the most ingenious contraptions using everyday objects in Richard Hammond's Crazy Contraptions. Teams of contestants will go head-to-head to build their own Chain Reaction Machines. With contestants having access to a workshop and purpose-built home environment to test their invention, they will be given the challenge each week of designing, creating and showcasing a new construction, before being judged based on their ingenuity, design and build-quality.