Wanted to design a single print spinner and came up with this. Designed in Tinkercad and printed on my Ender 3 using Solutech Glow in the Dark PLA. I printed it on a raft for the extra support and had to do a little filing but otherwise post-print work is minimal.
This was designed more as a proof of concept than for looks, I could see easy ways to improve the overall aesthetic.
Added 3 more wings on the original design for more weight and it just feels better in the hand. I am working on a ball bearing one-piece design. Originally had 8 small outer spheres but too much of a gap was left and they could pop out. Redesigned with 10 outer spheres and currently printing it out. Included the stl for those that want to try it.
Glow in the Dark
Used Concentric for the support pattern.