|09:58 am - Full of Win|
This is just so cool on a number of levels. It is instructions for building a device that monitors soil moisture through conductivity and, through a wireless connection, has a computer send a message that a plant needs watering. This implementation is for sending that message to Twitter, but I could see editing the script to send the message to something like Backpack or Remember the Milk.
Geeky plantness. Geeky electronics. Geeky computer connectivity. Fun!