This planter may not have a jingle like a Chia Pet, but the Portobello Mushroom Growing Kit ($50) actually gives you something in return for your money. Designed to grow mushrooms at home within three to four weeks, this unique growing kit will save a great deal of cash over buying Portobello at the market. Complete with instructions and recipes, the Portobello Mushroom Growing Kit comes ready to use, right out of the box. Just open the container and mist daily.