During the cold months, many people pack their bags and embark on long vacations—often at the expense of their houseplants. Keep your plants hydrated when you’re away with the LightningStore Irrigation System, which consists of a self-watering probe. To use, stick the ceramic cone tip into the soil of your houseplant. Put the connected hose into water reservoir (like a glass or bowl of water), and the liquid will travel through the hose to automatically water plants. Available on Amazon; $14.99.