Actually you shouldn’t have time for needlework because you knit the lace knitter’s Advent calendar 2014 ;-)), but if you have time try wiggly crochet or 3D crochet.
Links:
Wiggly Crochet (Lehrgang: Wiggly Crochet / 3 D Häkeln) (German, photos)
Here at unikatissima:
Lace Knitter’s Advent Calendar 2014