Yep, a safe. The kind used to store money and valuables. Basically, like an Ender Chest. You can put cubits and up to 15 items in it and bring it with you everywhere. Place it and the stuff is all still in it. It would be a semi-hard craftable and you could make as many as you want. However, no matter how many safes you place, they are all the same inventory. Other people can mine it and access it, but they can't take your stuff. They have their own unique chest inventory. Thoughts?