Do you know anyone who works for NHS?
Most Wards/Departments, have a 'stores day' once a week, & get most items packed in large cardboard boxes
We just flatten ours, but staff are always asking for them
Many years ago, it all used to come in plastic 'crates' - with lids, on one house move, we borrowed (actually signed for!) about 50 of them
(plus with the lids on, they were stackable)