Being someone who knits, I was amazed to find in the Whipple Museum of the History of Science these mathematical surface models knitted by a scientist over a century ago. There is more about them here:
http://www.sites.hps.cam.ac.uk/whipple/explore/models/knittedinterpenetratingsurfaces/ It reminded me of when I was trying to make a model of a Riemann surface out of paper five years ago.
http://wigtonphysics.blogspot.com/2015/01/trying-to-make-riemann-surface.html
