Stackable Life/Heart Token

The Problem
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I became tired of my life tokens falling all over the place. In addition it is impossible to tell 1 vs 5 tokens apart. Finally when my frustration became great enough this life token was born. The first iteration (magnetless) was nice and helped but was still difficult to stack and would still scatter when knocked over. I then added a magnet and BOOM, awesomeness. Now I have tokens that want to be together, they don't fall apart, they don't tip over, and they don't scatter.

Magnet Size
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The current design is uses a 1/8"x1/32" Neodymium magnet (approximately 3mm x 1mm).
https://www.magnet4sale.com/n42-1-8x1-32-neodymium-rare-earth-disc-magnet/

The magnet hole is designed to be tight enough so that the magnet can be pressed into the plastic rather than glued in place. Based on my printing experiments you may want to size it up or down slightly to get the right fit. Gluing in place with super glue would probably be easier but I didn't want to dea