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Hook

Using YOUR "useless" inventions. A spoon with a hole in it. Okay, so you could actually use this while you're eating cereal and then you could save the milk and just reuse it or drink the milk later. Or if you need to get a piece of pasta out of the pot in order to taste it to make sure it's done, you can just do that and the water will automatically drain out of the hole in the spoon.
Their other posts in the index, biggest breakout first.