An upcycled oyster-mushroom growing kit that lets you be an urban farmer.

The jury says
In recent years, our relationship with the food we eat has undergone a transformation. A growing number of consumers embrace the importance of supporting local food production and recycling food packaging. The entrepreneurs behind Tag Tomat (Roof Tomato) have established a successful business model that is involving and engaging and which builds a community around their message, making sustainability both relevant and fun.