hydrogen vegetal feeder by vandenbussche gregoire from france
designer's own words:
HVF is a robot vacuum cleaner that works using hydrogen cells. This energy produce h2o (water) vacuum capture dust, dust is like dirt: vegetal use these two components to grow.
When your flower pot is full, just cut 2-3 times flowers and re-use it again! (Dust became flowers!)
Each HVF is delivered with two flower pots. (you can also buy additional flower pots)