Crop circles get a lot of attention, but most people don't own cornfields or know any ETs. The good news, though, is that you don't need to be a professional designer to mow yard circles.
You don't even have to be sneaky about it and the local news will be all over your front yard. HELLO, PUBLICITY. All you need is a lawn mower with sharp blades, a little strategy and lots of patience. Maybe get some bug spray, too!