Hah! My sibs had a way around this. They would put the gift inside another box and put other things in it, so when you shake it had some weight and made noise. We'd get gloves stuffed in an empty oatmeal box, packages with two big ol' nails that would clonk around. Or a calendar wrapped in a whole newspaper, wrapped again in cellophane and then wrapped in Christmas paper. Or a shoe box with Dads' old snowchains and a new watch in it! They were a pretty creative bunch. We could NEVER guess what was in the package!