For your consideration, this lot of three (3) vintage LEGO Hinge Coupling Nylon 2x2 , which are milky white in color and which were made by Lego in Denmark sometime in the 1960s.
These connectors have lots of possible uses. Just for example sake, I showed how they could be combined with other Lego brick systems. However, just to be clear, this listing only includes the three nylon ties and NOT any of the other Lego pieces pictured for example sake.
Thanks for looking. Feel free to ask questions. If you like classic LEGOs, feel free to peruse my other listings.