The cables themselves don't add basically any weight, you're only adding a centimeter or two of it, just make a loop so the cable doesn't strain. The 3DS actua

The cables themselves don't add basically any weight, you're only adding a centimeter or two of it, just make a loop so the cable doesn't strain. The 3DS actually has four cables running through its hinge: the LCD ribbon, the camera ribbon, the speaker ribbon, and the wifi antenna cable. The problem is you need to make the hinge physically larger, which apparently Apple is unwilling to do.