I saw these dollar origamis on Yatzer, and I am quite impressed! They are the work of a man named Won Park, whose love of origami began when his mother took him to a Japanese paper shop as a boy. It was there that he got his first origami folding book. Now, at 38, he is an origami expert!
You can see some more of his creations right here on Yatzer, and below is a video I found where you can watch him fold a paper rose!