I use a version of Pat's method.
Usually I have on hand plenty of 17", 24", 36" and 44" boxes the paper came in and a few 60".
I take a box same width or preferably a bit wider than print/s. The core is wrapped in archical paper. Prints are rolled , one at a time , with interleaving paper onto the core. Prints are rolled with curl as they were on roll, i.e. coated surface out. When rolling up is complete one or more straps of scrap paper are taped around roll to secure. Roll is slipped into plastic tube , plastic ends are pushed into core ends and whole caboodle is placed into an appropriate sized original box which is taped up.
Boxes that are too long can be cut down and reformed at the cut off end. Prints shouls be allowed to dry and harden for a couple of days before packing. I also use a spray print shield.
Small prints are interleaved and bpacked in foamcore or archivally boxed.