“Copper dust” on containers to show copper golems where to sort

Either the Copper Golem should have a “program mode” that lets you select which containers (any containers, not just chests) you want them to sort, OR the player can add “copper dust” or something to any containers. If any container is detected within however many blocks that has copper dust, the copper golems will only sort those containers. As is, the copper golems are barely useful even to the ideal six-double-chest home storage system. It’s still faster to just sort it yourself, and the golems won’t do barrels or hoppers, thus significantly bulking up the redstone needed to make any use of them. They should adapt to compliment the storage systems, not the other way around, imo. Thanks for reading