Tired of watering your plants daily? Perhaps your plants are dying while you work or play?
No worries, make yourself one of these DIY electric watering system and it will literally water your plants for weeks on end.
Of course, you have to know how to program an Atmel controller and some circuitry soldering is required. You could probably make something similar too though with easier microcontrollers like Basic Stamp, Arduino, or Cubloc.