Turn anything into a flying drone

Interesting build that basically has you attach 4 propellers to an object and presto, instant flying drone.  No kit for this but you can buy/build all the parts yourself.  A quick eyeball estimation tells me this could be around $400 in materials.

http://hackaday.com/2013/07/08/turning-anything-into-a-drone/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29

http://jaspervanloenen.com/diy/