Presents.*
We pretty much agree this every year, then my wife goes off and just gets me something. Which means I have to get her something. Etc. The benefit of going on holiday just before Christmas means she's not had the chance, so we'll be present free. It's a big relief tbh, we just end up buying crap that we don't need or want, or novelty items that have an amusement half-life measured in fractions of a second.
Seconded on the parsnips, hate 'em. We will be doing turkey and trimming though, as I like it and frankly I'd have it even if I didn't just to annoy the fuckers who go on and on and on about their goose or whatever alternative.
*ok, the in-laws will bring something, though the last I heard they were trying to give us some money for some reason that escapes me.