Thingiverse user DrWeidinger shows off some attractive toys.
Here’s an elegant little FDM printed toy featuring magnetic spheres for fastenings. Just pop any of the many brands of popular ball magnet toys (you know the ones) into the specially shaped housings in the printed parts and assemble them into nifty shapes.
Since the spheres rotate freely in their housings they can spin to face the optimal direction for maximum holding force. Neat!