Challenge card Challenge card - "Another link in a chain..." Create an object that has a connector on two sides. Produce it again and again, linking each together. Parameter cards Parameter card #1 - Summer Parameter card #2 - Uniformity Expansion set Parameter card #3 - Lone Star The design can be a lock itself and/or part of a very long chain. It is designed for connecting and/or locking small item such as cupboard anti-child lock. It can also connect with multiple of itself to extend usage, and it also works alone. The design also targets for children with Autistic syndrome. It is flexible so it can build to many shapes to entertain them and to help them to communicate with the world.