Bobbin lace is made by braiding and twisting lengths of thread, which are wound on bobbins - special wooden spools with an extension to hold them. A pattern or pricking that is pinned on the round pillow will determine the design of the lace. As the work progresses following the pattern, the weaving is held in place with pins set in a lace pillow.
As this description means pretty much nothing to anyone who isn't already familiar with it, and an image is worth a thousand words, this is how Mantza's pillow with bobbins looks like:
Two simple movements form the bobbin lace: the 'cross' and the 'twist'.
and this is scaled-up and simplified presentation of the basic technique: