When I had a relatively small item for my brother (it was a turtle necklace in a small box) I wrapped it, and then thought, "Gee this looks really small compared to everybody else's boxes." After some thinking, I raided my stack of boxes - roomie and I save various cardboard boxes from different sources so we'll have a variety of sizes to pick from when we want to wrap/mail something. I selected one a coffee mug came in, a shoebox, and then a USPS large priority type box. I "nested" them, then filled in the space with decoy small boxes, all wrapped with scrap odds and ends of wrapping paper and newspaper. Then I wrapped the large outer box with newspaper, specifically the crossword puzzle pages since my brother loves those. It LOOKED big, rattled a little when shaken, looked great. My brother went from excited to skeptical, to exasperated, and finally to laughter when he began digging through all those boxes. It probably didn't help that I put messages in the decoy boxes. (Along the lines of: "Nope, not this one." "Your present is in another box." - obscure nerd ref there, he got it though. And so on.)