Some retailers, dealing in the sort of stuff that comes in large boxes, can be happy for you to remove some for yourself.
Worth asking at some likely local "suppliers".
The worst that is likely to happen is being told 'No'.
If this works, it can be worth considering what the box "looks like it might contain", if is is printed for the original use. A Dutch cycle manufacturer dropped the amount of damage they got in transit by the simple change of slightly altering the image on the box. Originally, it showed a picture of a bicycle - they changed this to the same picture of the bike, but showed it on the screen of a large, flat TV. People stopped flinging them around quite so enthusiastically.