name of this plugin would be instabuild, and some commands could be /instaall for the entire server, /instaadmin for admins, /instaoff to turn it off. what this would do would make it so it takes the exact ammount of resources from your inventory and put it into what you hit with a hammer. example: i put a wall up and hit it once with a hammer and it takes the 9 wood needed to upgrade and make it to lvl 1, same thing for lvl 2-lvl 6, but you have to have the materials required for it.