Formation helicopters, mind-controlled cat ears, forks that measure what you eat and air-conditioned shirts: the bizarre side of tech from CES 2013 From Techradar:

1. Swiveling cat ears

With the power of your mind! Neurosky's brainwave scanning band really works, but are cat ears showing your feelings really the best use?

Updated: 10 bizarre gadgets from CES 2013