Magnet Toy

I got the idea to make this magnet holder after watching a video on polymagnets. Basically that company "prints" multiple magnets onto the surface of a single blank magnet. They can print alternating north and south faces to get some pretty interesting interactions like a latch or a spring.

https://youtu.be/ftXLjHBzyU4

https://youtu.be/kie9LixKnH8

You can buy the magnets here (though any 4mmx2mm magnet will do):
https://www.ebay.com/itm/200-MAGNETS-4mm-X-2-cylinder-disk-STRONG-N52-rare-Earth-Neodymium-US-SELLER/122399786060?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Find the acrylic dowel here (but you can use any 3/8" size dowel):
https://www.amazon.com/gp/product/B0006O6QYO/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1