I didn’t look into all the rules but for a pretty cheap price you could set up PO boxes. They can be reserved on line and you could mail yourself a supply of stuff at each PO without ever going to the site. Some of the boxes are pretty big, see below.
Size 5 – X-Large (22 1/2″ x 12″ x 14 3/4″)
Incoming shipments? Our largest option is big enough for Flat Rate Boxes and Parcels.