[mothered]

The box method being what exactly?

You claim the Item Is defective and when they request to return It, you send the package without the Item.

There must be a tear on the package (and sealed with different colored tape), to give the Impression as though It was tampered with and the Item stolen during transit.

You may want to put some dry ice in there aswell so a weight registers. This will make it seem more likely that you parcel was tampered with.

Not In this case.

The question was:

Would I have to sign for an Apple Watch/Airpods?

The above Items are extremely light and are quite compact, so there'll be very minimal (f any for the Airpods) difference In weight to that of an empty package/box. If need be, a little extra packing will take care of It