I've just taken delivery of two very nice jumpers from Gap that I ordered online. Inexplicably, the parcel also contained two tops that I didn't order. They're both very nice, but the wrong size for me. What should I do? I'm normally a scrupulously honest person (a find-£20-on-the-street-and-hand-it-in-to-the-police-station type person), but the prospect of trekking down to the post office in the rain for the benefit of a multi-national corporation is not appealing. Should I a) do the decent thing and send them back, b) give them to Oxfam, or c) flog 'em on ebay?