Dog Bone Magnet Fidget

Scaled down to 50mm in length, split it in half, then added pockets inside for 6x3mm round magnets. Pause the print before the layer that covers the magnets to insert the magnets, then allow it to continue. Note that the parts are not the same, so don't print one piece twice, print one of each. When installing the magnets, be sure to flip them over after you do one of the halves, otherwise it will be the same polarity between the two faces, and the fidget won't work properly.