We tend to imagine they will come in a futuristic format, but it’s often the case that we already had the perfect system and replaced it. Take prefill, it’s not a term everyone is familiar with, but in fact most of us are familiar with the concept thanks to the traditional milk round: prefilled Glass bottles are delivered to your door, you use the contents, and then leave the bottles out for cleaning and reuse. It’s a simple and efficient system that served us well for over a century and one that could solve many of the problems created by modern packaging.