Very cool. Stick these two separate flower pot halves on either side of your favorite window and watch as your guests ooh and aah about your seemingly-magical creation. Keep indoor plants on the inside and outdoor plants on the outside. The two halves are held together by magnets so you can move them around easily, should the need arise.
This is a design by Kyung-Eun Oh. No word on whether or not it's commercially available but this might be something you could put together yourself with a little time and energy.
SOURCE: Yanko Design