I use old 35mm film canisters to protect the ends of my electronic cables when I remove my units from the console at the end of the day. Cut an "X" in the bottom of the canister thats large enough to slide over the cable connector, then slide the canister bottom-first over the connector and onto the cable. To hook up my electronics, I slide the canister down on the cable so the end is clear to easily connect to the device. When I unhook it, I slide the canister down to the end of the cable and snap on the cap. I keep the caps handy by attaching them to the canister with a short length of monofilament. Every so often, I spray some corrosion blocker on the cable end before I store it in the canister.