MOA's take on the whirly gig, texas star, or sideways spinney thing from hell is the Red Neck Star (RNS). Constructed of 3/8" AR500 steel, with a solid 1" steel pivot shaft, automotive bearings, and a one piece construction hub, MOA's RNS is a modular step beyond the norm. This DIY kit includes the entirety of the star reactive target, and depends on the end user (that would be you, presumably) to acquire materials to build the stand and upright, and to attach the pivot shaft to the upright. Why would you do this instead of buying the whole thing from MOA? Three reasons - you save $170 right off the bat, you save additional shipping (this ships free, the complete version doesn't), and you get a smug sense of accomplishment building it yourself.
In the boxes you'll find:
Five each: laser cut arms, paddles, paddle brackets, paddle retention pieces
One- star mount for hub
One- 1" diameter formed pivot point (axle)
One- pile of hardware to put this all together (1/2" carriage bolts, nyloc nuts, and springs)