My neighbor Dale handed me a cardboard tube at his garage sale in Toledo and it cleared my whole shoe pile of cords
Dale sold me a $3 poster tube and said to drop the power bricks in it and run the cords out both ends. I tried it last Saturday on the pile behind my desk and all 11 cords fit in one tube standing in the corner. He said 'you don't need a tray, you need a place the mess can't spread.' What are you all using for the long ones, because my lamp cord still hangs loose.