The densest grabber would be an item with inversed grabbing abilities. It would be able to puck up heavy items with ease, but would be unable to pick up light items. It would also be able to pick up and move cars and trailers, and when doing so, the items in the car/trailer would lock in place to it. This would allow for easy repositioning of cars or trailers that are stuck.
The item itself would be expensive to craft, though it would function like a quest.
You would first talk to the lava golem (I forget their name) and you would be able to ask about a powerful tool, they would then tell you they can craft one, but would need you to bring them the materials. When you do, it will cost 30k for them to craft it. They will need 2 meteor cores, a piece of meteor ore that has the little ball things on it, and a piece of void crystal, aswell as the grabbiest grabber.
You would take these items to them and if they are all within the shop, you will have the option to pay them to craft it. And once they do, the grabber will transform wherever it is and the rest of the items will disappear.
The grabber itself would be mostly dark blacks with glowing orange accents. The grabbing circle would be dark blaco on the inside and orange on the outside.