Here is an EASY one, the Spike Ball or Spiky Cuboctahedron. If you can fold the classic origami pinwheel, this one should not give you problems at all. You can make it in various sizes, the smallest is shown here, but check out this site ...
by OLGACRAFTS
by Zoes Fancy Cakes
by Hectanooga1 - Crochet, Knitting,
by Be Cozi
by Minakshi Kitchen
by Simple Easy Art
by Guidecentral English