So, you will need: a water container, a needle and a piece of any floating material (foam, sponge, cork or a simple sheet, as in our case).
Further actions are simple. We take a container and pour water into it. Then we take out the needle and magnetize one end of it: for this you can use a magnet, and in its absence — fabric or even your own hair. Now we install the magnetized needle on a piece of floating material and lower it into a container with water. After a while, our needle-arrow will stop oscillating, and its magnetized side will point from south to north.
Here's how it all looks in practice:
Now you will surely be able to navigate an unfamiliar terrain, because it will not be difficult to make such a compass.
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