Why ask a friend to water your plants when you're out of town, when all you need to create your own automatic plant watering system is paper towel and a glass? According to Liz Foreman of HouseLogic.com (who heard of this trick from Lifehacker.com), the process is simple: Tightly roll a few sheets of paper towel (we suggest using a sturdy brand) at a diagonal to create a thick rope. Then place one end of your paper towel rope all the way into a glass of water, and drape the other end across the soil, a few inches from the plant. The paper towel sucks the water from the glass and deposits it at an even rate on the soil. Watering for a few days: done.