You can consolidate and combine all your items into one box.
Here is how to do it.
You can consolidate items that are in Package in Warehouse status
In your account page, select Package in Warehouse status.
There is a Checkbox to the left of the #. Select the orders that you would like to combine by simply check the checkbox.
After selecting, click the "Consolidation" button on the top left and at bottom left of the list.