I got a really nice christmas present this year, a set to do
Cup Stacking.
It is some kind of sport which is about to built pyramids of cups as fast as possible. Its very funny, see the world record video here:
http://www.guinnessworldrecords.com/images/cupstacking.mpg.
I am not very fast but I will train and maybe I will do it in < 20 seconds in the future