Oozy Gunge Timer, set of 4
Watch the oozy gunge make its way from the top chamber to below.
Watch the oozy gunge make its way from the top chamber to below. Experiment with them and see how the temperature around them changes the speed and flow of the oozy gunge - why not place on a windowsill in direct sunlight or try popping in the frdige first and compare the difference? Set consists of Red, Orange, Green & Yellow size: 100mm high
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