You know what they say: a watched pot never boils. Enter the Boil Buoy. You place it in your pot of water, walk away and wait for it to ring.
The design is actually quite ingenious. Instead of relying on wizard like mechanics, a small bell inside the water tight device begins to ring when the water boils as a result of the bubbles, which shakes the buoy, just like the sea bearing version. It’s made from 100% food-and heat-safe materials and sells, if you order it now, for $10.