Milkshake Straw construction pieces

I decided on ball-and-socket hubs so my grandson can make geometric shapes from milkshake straws (about 1cm ID). Since printing each piece is only 10 to 15 minutes, I included array files so there isn't as much setup and resetting during printing. I also had to let the "hubs" cool down for a while so I wouldn't deform them trying to remove them from the printer, so the arrays should help get more done and allow them to cool a bit and solidify before removing.

The "ball" parts can be squeezed