Just about all toolboxes have tote trays. Tote trays keep smaller tools and parts separate from larger ones. If a large percentage of your tool set is made up of smaller tools and pieces, perhaps it's time to look into getting a multi-drawer tool chest. Slightly larger than a toolbox, it allows you to divide and organize small tools into groups that can be quickly located, collected, and returned.
If you’re buying a property that contains rental units, consider obtaining a letter from a real estate broker or some other documentation verifying that the rents you plan to charge would be realistic. A lender who is qualifying you for a mortgage probably will not take your word for that.