You might consider some type of insulation displacement connector (IDC). Here's a sample Digikey search for IDC termination connectors. Basically you're just pushing the wire into the slots on the back side. You do need a simple punch down tool to do this; could probably fabricate one out of a flat screwdriver. The wires can be discrete or you can use ribbon cable.
Like DrAzzy mentioned it's a real pain in the butt if you choose a connector that requires crimping pins.