Same here - not £100s in my case but bits and pieces to the States and Kenya. All arrived intact and without duty. Books are good - printed papers sent as gifts have no duty to pay.
Just get something cute, light and obviously gift-like. That's part of the challenge surely
Anyway, I'm in as Monster has offered to run it.
Monster I'll PM you my address, let me know when you draw it (by beginning December I guess - as you said, we need time to mail overseas).