I'm presenting here a pocket-sized puzzle in the first of several versions, depending on your skills, materials, tools and target audience.

In every version, though, you drop a small coin in one slot, and need to get it out of the other slot.

This first version is quick and easy to make (it took me less than thirty minutes from idea to finished item), and small enough to keep in a pocket.  It is also perfect for making with children, as a diverting way of filling an afternoon.

Step 1: Materials

To make the "easy" version, you need thick card, something to cut it, and something to glue it.  If you are using a craft knife to cut the card, a metal ruler is also very handy.

The card needs to be as thick as the coin you design it for.

Almost any glue will do the job - PVA, glue-stick, etc.

Note: when it comes to cutting out the parts of the maze, a laser cutter would be very handy.  It would also make it a lot easier to make larger, more challenging versions.
<p>Made two, my friends were crazy and I memmorized the maze so money making time!</p>
<p>Haha, enterprising!</p>
Awesome! <br> <br>Going to go and attempt a multi-level one just now! <br> <br>Ross
Ooh! Take pictures!
Finished! <br> <br>Once you get to three layers it gets difficult even when you know the route. <br> <br>
That is awesome!
<p>how do you make a multi-level maze? i want to make i so help me! </p><p>Godd job too.</p>
<p>See Science Guy's post, or my other maze:</p><p><a href="http://www.instructables.com/id/Acrylic-Penny-Maze/" rel="nofollow">http://www.instructables.com/id/Acrylic-Penny-Maze...</a></p>
<p>and what size is the cardboard square you use?</p>
<p>This one is about 60mm square, but there's no real rule about that.</p>
We build a wooden one in my woodwork shop in my middle school
<p>From this instructable? Could you post an &quot;I made it&quot; picture?</p>
Fantastic! <br />I'm deffinitly gonna try this <br />
Cool - post a picture when you do!
I will :)
Argh, still. need. to. try. this out!!!
Love this project, especially that it reuses waste to make a toy. &nbsp;I developed this into a Hacker Scouts Open Lab and tried it out this weekend. &nbsp;<a href="http://www.scott-fay.com/1/post/2013/07/coin-maze-hacker-scouts-open-lab.html" rel="nofollow">Here's a blog post about it</a>. &nbsp;The kids and parents loved it. &nbsp;Thanks for the awesome instructable!
Oh, that's very cool - how long did they take to make them?
So simple, yet so wonderful!!
Thank you!
I saw your instructable this morning and after an hour of work i have one to call my own. It was easy to make when i planned it out on 1/4&quot; graph paper, then glued that to the cardboard and added in walls one at a time. paths are 1&quot; wide and walls are 1/4&quot;. The entire thing is 5 1/4&quot; square. It fits a nickel.
That's a very nice job!
This would be a cool stocking stuffer made from small pieces of birch and balsa...great instructible! Voted for both! Good Luck! <br>
Following a similar concept, you could make a smaller version of <a href="http://www.youtube.com/watch?v=EYRd8hNvi7o" rel="nofollow">This</a>
be even better as a full cube of layers
Nice, simple and addictive - 3 thumbs-up, minimum.<br> <br> Couple of questions:<br> <br> Just how big <em>is</em> it? I suppose it depends how big your pockets are, but&nbsp;if the 5p&nbsp;is 18mm square, I guess&nbsp;the whole thing's&nbsp;about 70mm square overall...?<br> <br> Which leads into the 2nd question - what's the lateral clearance?<br> <br>
It's actually 60mm square - the clearance around the coin is around 1mm, but if I won a laser cutter*, the clearance would be even less. <br> <br> <br> <br><sub>*Not that I'm hinting about votes...</sub>
What about the cardboard challenge?
That's why I made a sideshow version.
ohh... X3
Thanks.<br> <br> A laser cutter&nbsp;<em>would</em> be a nice idea...<br> <br> So might a 3D printer (except,&nbsp;I&nbsp;you'd lose the cardboard)...&nbsp;
Is a 3 layer one coming next? That way you could increase difficulty and still keep it small.
That was a fast comment! <br> <br>Yes, layers will be involved in future versions, as will more durable materials.
Would make for a nice laser cut project too.
We just had that conversation by PM :)
Already started drawing up some files!
I have some hand sketches ...
Genial idea! Is it yours? <br> <br>My granddaughters will be aMAZEd!
I saw one that used marbles, once. I thought coins would make the maze easier to handle.
Your improvement has a taste of genius, kiteman. I will do some for my granddaughters (please think something soon to simplify this last word).
What a clever idea! It seems like a fun project. :)
Yes, it is.
What a clever idea! It seems like a fun project. :)
I build one with 5 layers!!! <br>
Very cool! You say it's pocket-sized? Enter it in the pocket-sized contest! <br>-BLUEBLOBS2
Already entered, just waiting to be accepted.
I would freak out in pain trying to solve one of these...
This small version proved quite easy for <a href="http://www.instructables.com/member/kitewife/" rel="nofollow">Kitewife</a> &amp; <a href="http://www.instructables.com/member/conker-x" rel="nofollow">Conker-X</a>, but more challenging versions are coming.<br>

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