This is a turtle shell fidget toy I designed for use with some magnets I bought from HomeDepot. The size of the magnets I bought are 0.3" x 0.11" or about 3mm x 8mm. These magnets are a perfect fit and stay in place with just a drop of glue, but they are super strong at first and need some wearing in. I also added a second shell that's a tiny bit thicker than the original, making it a little easier to hold.

Creality

Ender 3

No

Yes

0.16

100