I managed to surprise myself last year by getting my mates a double torch set as they had mentioned walking the dog in the village at night was the bit shaky.
Reaction from the Mrs was brilliant - genuine joy at something practical rather than socks.
This year I haven't a clue what to get them, and I don't do Chrimble normally. She asked me to knit her a cosy for her egg timer, but it's been fifteen years since I touched a knitting needle in anger...
(and yes, this cracks her up, too)