Step 1Draw, then cut out the silhouette of a haunted castle in a drink box.Cover the silhouette in black with marker pen. 
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Step 2With the black marker, decorate the outside of the jar with bats and quirky trees. 
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Step 3Add a small amount of very hot tap water (<1cm), then close the lid and stir the jar until it is uniformly warm. 
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Step 4Place the castle in the jar.Put the lid upside down on the jar and add some ice cubes on top.
Place a lit candle behind your jar and darken the room.
Now it is possible to observe the fog that forms and moves. 
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Step 5Light up a match, then extinguish it and immediately throw it into the jar.
Replace the lid and observe how the fog increases and creates an even more gloomy atmosphere... 
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