I remixed the Batarang using the tutorial given on the Articulated Anything Thing (link below), and then decided to make my sons an articulated bat with some more tweaking.

My oldest son loves the flexi/articulated toys and calls them wiggle toys.

Articulated Anything link: https://www.thingiverse.com/thing:2840744

Edit: I fixed the text so it doesn't go all the way through the bat, just on top. I made another version to see if printed better, with more flex joints (I added back the joints I took away to begin with) and text going another way.