Ingenious, practical and easy to use - that's the verdict of our Spring Chicken tester who tried out the Magiplug. We tried the Magiplug bath plug.  (There's also one for basin that we're looking forward to trying). The bath plug fits neatly over the plug hole and works effectively, stopping the likelihood of scalding and the hassle of an overflowing bath.  As soon as the water gets too hot, the Magiplug changes colour and when the water reaches a certain height the Magiplug opens up to drain out some of the water.   The bath reached 15 cm (5⅞") before some of the water drained out.  The plug fits quite snugly so you need to pinch the top or poke under the sides to remove it, although there is a plastic loop on the bath Magiplug where one could be attached.  If you’ve suffered the hassle and expense caused water spilling over the top of a bath in the past we reckon you’ll love this product. A great investment for people who tend to get distracted.