I've got to buy a replacement wine glass for my picnic basket, but even if I buy, say, 3 or even 5 glasses, that's still silly if they're coming from the UK or from France.
I need to add something else to the order to justify the order itself and the postage. Perhaps a 4-bottle wicker basket, or perhaps an empty picnic basket...?
Then there might be a bottle of sherry in the boot/trunk. (We don't call it "trunk"... but I could put a bottle of sherry in a trunk as in PIECE OF LUGGAGE.)