Wally Pockets

Today on Onceit, there were Wally Pocket's for sale. I'd never heard of these, but now I've seen examples of them being used in interiors I'm intrigued. They are made from recycled plastic milk bottles and have an "internal moisture control and a self-watering reservoir which protects your walls from getting wet". They look great as living art work, and it got me thinking about spaces that could use some greenery at my house.
Check out http://www.woollypocket.com. Pictures property of Woolly Pocket.