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 Easy Art
by CreativeIdeas
by kovai club
by DIY-HacksDOBYMYSELF
by Hello Pixel Art
by Lan Anh Handmade
by naztazia