Flowerpot with warning system
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My idea can be interesting for those who fail in household plants cultivation as they are constantly forgetting to water the plants, do not provide them with enough sun, etc.
I suggest creating flowerpots which will warn the owners about such troubles. The pot will have light sensor from the outside and temperature and humidity sensors inside. If the amount of received light, water or temperature are beyond the limits the pot will start blinking red light warning the owner in such a way.