Give someone the chance to feel like a genius from ancient Greece with the Project Genius Grecian Trick Lock Puzzle.

Inspired by the clever designs of Theodorus of Samos, this puzzle brings back one of history’s most secure locking mechanisms in a brain-teasing form.

It’s a great pick for anyone who loves solving things that look simple but aren’t!

You’ll receive a beautifully crafted lock and key, but turning the key won’t be enough...

This trick lock is full of surprises, and it’s up to the puzzler to work out what’s really going on inside! 

Great for ages 8 and up, this is a fun way to give someone a puzzle with a twist of history.

It looks great on display, feels nice in the hand, and delivers a satisfying challenge that doesn’t rely on screens or instructions.

  • Based on the original Greek warded lock design  
  • Includes metal lock and key with hidden trick  
  • Suitable for ages 8 and up with a 3/5 difficulty level  

Wrap one up for the curious mind in your life - it’s a clever gift that’s sure to get them thinking.

Peter and Anne-Maree
Hello from Peter & Anne-Maree

CoolThings Australia is a Australian owned & operated small business located in Launceston, Tasmania.

The CoolThings Australia mission is to help you be the coolest gift giver in your family and circle of friends.

You know the feeling you get when you give a gift and the response is "That's so cool!" - that is what its all about!

CoolThings Australia was started in 2003 by Peter and Anne-Maree and is still led by them to this day. Their purpose in business is to be givers themselves and they support multiple organisations close to their hearts locally, nationally and internationally.

Both Peter and Anne-Maree and their team of cool giftologists thankyou for your support and are looking forward to serving you today!

Project Genius Grecian Trick Lock Puzzle Reviews

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(5) Lindsay - Verified Customer

The items I purchase were exactly what I ordered they are indeed Cool Things! Prices were competitive and delivery was quick. Thank You! ...

(5) Anonymous - Verified Customer

Extremely happy with products purchased as gifts, two very happy grandaughters...

(5) Wendy Thomas - Verified Customer

Loved finding the website. Fascinated by the variety of products that are available. My granddaughter loved her gifts. I will certainly be purchasing more exciting products. What’s more appealing it that you are an Australian company....

(5) Evan Brand - Verified Customer

Communication from Cool Things Australia was consistent and detailed. My item shipped in a timely manner, and was as described by the website. Overall a positive experience ...

(5) Bindy - Verified Customer

I bought some spy watches and LED light sneaker clips for my 6 yo grandsons. They are great and reasonably priced. Packaged very well and arrived quickly. Prompt customer service by both email and phone. I’m about to order some more goodies. ...

(5) Bindy - Verified Customer

I bought some spy watches and LED light sneaker clips for my 6 yo grandsons. They are great and reasonably priced. Packaged very well and arrived quickly. Prompt customer service by both email and phone. I’m about to order some more goodies. ...

(5) Brian - Verified Customer

My items arrived today I'm so pleased with my purchase, highly recommended. Coolthings have so much really cool stuff. Take a look you won't be disappointed. I will be searching for ny next purchase very soon....

(5) Terry - Verified Customer

Very prompt delivery, securely packaged, great product ... Thank you ...

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