Genderless construction system

A suite of construction toy systems in which mechanical connection is provided by hermaphroditic and functionally identical (genderless) connectors. Both hub-and-rod and building-block construction toy systems are disclosed. In the hub-and-rod construction systems, the use of genderless connectors allows: rods to connect directly to rods by the same means rods connect to hubs (longer rods can be directly formed out of shorter rods); hubs to connect to hubs by the same means that rods connect to hubs; and, in some assemblies hubs to be substituted for rods. An additional useful feature of the genderless connectors used and of the overall design of these toy systems is that many of the different construction toy systems disclosed herein will inter-connect. By the application of this invention, a very wide range of very different and independent toy systems can be designed that freely inter-connect.