Sharing a method to bubble high-level items that take up a lot of space

As you level up, you get items that take up multiple spaces. I made 'Living Stone' into the highest level Stonehenge, which takes up 9 spaces, but I was planning to keep it if the rewards (like Rock Dragon Eggs, Bricks, etc.) were maintained. Initially, it gave about 20-30 eggs and a lot of bricks, but I'm not sure if it was a celebratory reward. After that, even if I tapped it occasionally, it didn't give any bricks. Sometimes a Goblin appears, and if you defeat it as a Dragon, you get a tombstone. (From level 2 tombstone onwards, it gives piles like those thrown by the Undead Tree.) If you farm, you can get a 250-brick item, but right now, I'm trying to make the hill the highest level, so I bubbled the Stonehenge to make space. It's good to bubble items that take up multiple spaces when you're not using them. Since the stone, a pre-Stonehenge item, also took up 4 spaces, I bubbled it until I made it to the final level. The method is: If it's an item that takes up 4 spaces, place one other item in each of the 4 spaces within that area. Then, drag and drop another item onto the item you want to bubble. It won't be able to move elsewhere, so it becomes a bubble. haha