I think my weirdest so far was half a book. My Dad decided it would be fun to give me half of the book now, and then the other half for my birthday. So he took a knife, and cut the spine in half. It fell apart pretty quickly.
Then there was the time my Mom grabbed a poem I had written for class (at 2:00 in the morning no less) off of the top of my trashcan, had it FRAMED, and gave it to me. Note that I hated this poem. It now sits on her desk at work, and she still gets people telling her that it sounds like a professionally written poem that refuse to believe her son wrote it. I still think it's a load of crap.