Anyone have any brilliant ideas on how to secure cables to the sides of racks? The SKB is plastic, so there are very limited places where I could drill into it, and the Anvil is only 3/8" thick, so I'm not sure how securely I could mount something with screws. I want retainers on the left and right side- power cables on the left and signal cables on the right. In the past, I've used double sided tape, but it always comes off over time and leaves funky residue. I thought about using some epoxy to glue some 1/4" ply to the sides to give me something to screw into, but I thought I'd ask first, to see if I'm reinventing the wheel.