We're also witnessing a broader trend towards easier repeatability of DIY manufacturing. Once somebody makes a 3D printed part, or machines something at home with a unit like BoXZY or the Nomad CNC Mill, they can make the files necessary for creation available over the web, which makes it even easier for someone else to do the same.

Not just for plastics and metals, but for food and drinks too. Some of the newer machines seem a bit gimmicky (like the Foodini 3D Food Printer), while others are more promising, like the PicoBrew Zymatic beer maker.