Ball

We all know the problem, you can't print a ball with an FDM 3D printer. Either the supports leave rubbish behind or you get a deformed ball. Well this is my elementary attempt to solve that problem.

Just print two of these. No need for support (though you might need a raft). The two halves snap together without glue.

Now here's the challenge: beat me at my own game. See if you can design a ball that requires no supports, no glue, is scalable, and has exactly two identical pieces. I would love to see the world solve this life-changing problem!