Are you the type of person who needs a USB-charged chainsaw? Well then you need therapy...but if you must go through with your psychotic plans, there's always the i.Saw for home and office needs.
Methinks this may be a gag listing, but if not, I'm sincerely disturbed by the distance we have gone with these USB toys.
http://www.usbchainsaw.com/
But still, if this is real, I might buy one...WHO KNOWS
also, that saw is stupid.