So from what I understand, hoppers contribute to server lag, but putting containers, ideally droppers, on top of them helps mitigate that lag. I don't think most people are aware of this. Also, I'm sure there are plenty of people who leave their hoppers uncovered simply because they don't want to waste time or materials on droppers. My proposed solution is the "/dropper <quantity>" command. Available to all players, they simply need to use this command to have free droppers put into their inventory. Also, whenever a player places a hopper, have the following message appear, similar to the claim alerts. "Please place droppers on top of uncovered hoppers to help prevent server lag. Use the command "/dropper <quantity>" for free droppers.". To avoid annoyance, have it only appear if it hasn't been displayed for that player in 24 hours. I think this could really help spread awareness and activism among the player base when it comes to preventing hopper lag.