If it's possible, I'd like to have a plugin that will make you "own" the blocks you place. By this I mean that if you place a block, only you can remove it, set it on fire or (if it's a chest or furnace) interfere with it. Kinda like cuboid protection, except that blocks are protected individually. Of course, admins/ops would have the right to remove any blocks.
Are you sure this is really what you want? Somebody could just block off your house and you couldn't do anything about it!