Decorating cookies by hand can be a pleasant activity, but with a LEGO Mindstorms set, you can crank out a bunch of perfectly iced cookies in no time at all.
LEGO Mindstorms sets can be used to construct almost anything, and Jason and Kristal at JK Brickworks have created a great build for Christmas. With a Minstorms EV3 set (number 31313), you have every component you need to create your own cookie decorating assembly line.
All you have to do is download the provided program code and follow the instructions at the link down below. Once it's assembled and the program is installed, just load in a bag of your favourite icing and start it up with one of the pre-set decorating shapes. Perfect cookies every time.
Of course, if you don't have a LEGO Mindstorms set (they can be pricey), there are still other clever ways to make cookie decorating less tedious.
LEGO Mindstorms Cookie Icing Machine [JK Brickworks]