We have wanted to add some features to the laser like Air Assist and possibly aiming sites for the laser to assist in seeing where the laser is going to cut. Recently George has been printing a cable chain, using a design from http://www.thingiverse.com/thing:10946 that he enlarged a bit, for it. A cable chain is special in that it can curl in one direction but will remain straight in the opposite direction. At the same time it is hollow inside to allow, as in our case, for wires and tubes to safely run inside it.
We are going to have to print two chains, one to go along the x-axis and another for along the y-axis, but we are going along well. There is more than enough room within the cable chain for everything we want.