Botanicalls - plants use Twitter to tell you when they need watering!

Yeesh, it's $100 a pop http://www.makershed.com/ProductDetails.asp?ProductCode=MKBT1&Show=ExtI… and it requires both power adapter wire and ethernet cable... Switch it to PoE at least to cut the power cable. Or just perhaps, switch to a much lower power uC, only power up once a minute, and use, say Zigbee to communicate. IIRC, I've seen miniature boards with an tcp stack, PoE and analog sensor inputs for ~$15 per in bulk. I'll try and find the source and post it later.

I love it. Can it be more tongue in cheek.