This housing holds sets of magnets in positions that generate an equilibrium of forces where the magnets remain close, but do not touch.  The 6 holes at 60 degree separation holds four 6 mm diameter, 2 mm thick rare-earth magnets.  The center holds three 20 mm diameter, 3mm thick rare-earth magnets.  The 20 mm diameter magnets i used are:  https://www.amazon.com/dp/B09XV978F1?ref=ppx_yo2ov_dt_b_fed_asin_title  The 6 mm diameter magnets are:  https://www.amazon.com/dp/B09XK9ZMVQ?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1   Additionally, three 20 mm stacked magnets are used as the attracted magnets.  This will be shown in the attached photo.  You can see a video of of the toy at