Minimalist Sphericon

Minimalist Sphericon, inspired by Maker's Muse. Only the edges of the cones exist, so it behaves like a full Sphericon, but prints in a fraction of the time.
Make two, slot them together, and roll! It meanders across a flat surface.
Made with Tinkercad.
Update: made it twice as thick for durability, adjusted slot clearance to ease assembly. Sill prints quickly.