My design for the 3-D printer competition is a wire connector. Basically this design allows you to connect two different wires together. This design has two sides for two wires to be held in place. Both sides are not identical; one side has a 3mm gap for the wire to be secured. The other has a 5mm gap for a larger wire to be placed there.
This can make sure that the wires do not interfere with the astronauts work. This design can hold most sized wires and cables in a secure place. It can also be used to wrap unused wires/cables around it to keep them in a secure and easy to access position. This could be used for several other things, like hanging things.