Fernando Reza has made some great projects over the years, including his set of fictional business cards. But perhaps none of them are as nifty as his propaganda posters for the Mushroom Kingdom. The 11 x 17 inch posters are available as single purchases (Victory!, The Enemy!, Power Ups!, The Boos!) or in a set of four. $30 for one or $80 for all four. Not too shabby.
I really want the stomping out power ups poster.