Media
99% Invisible
A podcast whose episode about challenge coins one host recommends.
Mentions
540: Viscerally Revolting
224: Grump on Grump with Sean Bonner
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25:57
99% Invisible, of course. That's always good
100: So Much Universe, and so Little Time
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1:08:47
The 99% invisible about the challenge coins this week was really good.