Worried about loss? If you can use regular luggage, you won't be checking something that is obviously something other than clothes. And around Christmas, a box will be presumed to be gifts and a more likely target for thieves. Fewer than one on ten-thousand pieces are lost and never found. Some are because the owner didn't label them as identifiable. Some are because a thief pulled the tags to delay a reported theft. Keep it looking like socks and underwear (even a thief hates to get those for Christmas), and there's little chance of it being permanently lost. And if you use the suitcase, you can use it later to bring home your own huge gift haul.
Now if there was a way to encourage
them to lose it for a while, they would find it and deliver it to the door for you.
And it's good to remember that, if something is lost or stolen, many credit cards automatically insure anything you buy with that card, should the worst happen. Shoot a quick cell phone or camera photo of the open bag with them inside. It will speed settlement if they don't make it.