For me it's Lego. And a new dressing gown and slippers.
Ds is a whizz with being creative with Lego whereas I need instructions. I like to sort Lego into colours and get upset when sets are mixed up. It takes hours to re-sort it. Ds knows not to mess with my Christmas Lego.
I have a Halloween set waiting to be built and another on its way. I find Lego hard to resist.