This looks like an interesting gadget. Plant Sense is a device that will help you monitor your plants and in case it finds a problem it tells you how to solve it. The device comes in two parts, one plugs into your USB port and the other into your plant. Once the device gets the readings it uploads them onto the Plant Sense website where using a bunch of algorithms it can either recommend what plant you should grow or if you are already growing a plant it will tell you whats wrong with it and how to treat it. Yes its geeky but in a cool way. Costs $60. [Link]