In Last week bunker was published on Kickstarter for publick funding. As it is a perfect solution over many problems arises through filament handling. Some of coolest features of bunker is, it has close encloser and humidity monitoring control system so that filament remain clean from dust and humidity.
Also it can sense the filament usage during the print and when it run out it can be send message to user about that. The makers of bunkers also designed such that it can hold two filaments simultaneously. So if you are running a 3d printing services it is necessory to have a bunker.