Until fairly recently, I'd never been all the way to the top floor of the V&A, where the furniture and ceramics are displayed. The top floor is much quieter than a lot of the rest of the museum but has a fascinating mix of art, craft and education.
I watched a few short videos on some new (20th Century) manufacturing techniques using PVC, Acrylic and other plastics, incuding injection moulding the Panton Chair (pictured below). An iconic design made out of molten plastic all in a single moulded piece.
The actual video is available on Vimeo.
In addition to the industrial manufacturing processes, there are many educational videos on a lot of other things e.g. the dove-tail wood joint, another short video I watched and enjoyed. The classic production and decorative processes are well represented.
The V&A has a YouTube channel with lots of great videos that seem to cover almost everything : here.