I very loosely use seasonal themes. For the rest of the winter I'll have a basket of read-alouds about snow, hibernation, gingerbread, etc. We'll make some lemon snow ice cream at some point, and gingerbread pancakes. We don't do a lot of planned crafts, but we'll 'paint' with coloured ice cubes and make some gingerbread playdough as well. I do have quite a collection of seasonal toys, so there will be a gingerbread cookie play set for our kitchen, a snowman stacking game, indoor snowballs, and I've taken Santa out of our Playmobil Advent calendar set and left out the snowy trees and the animals.