Vihart | Snow Day: Unusual Tracks @Vihart | Uploaded 6 years ago | Updated 2 hours ago
I found some thinkable things!

Rolling Trefoil by Henry Segerman: youtube.com/watch?v=fVjcDBBrn-A

Very cool wobbly rolling objects at the Museum of Mathematics in NY: youtube.com/watch?v=L_z04poueUA

Rattlebacks are also on my list of cool mathematical wobblers, though less rolly: youtube.com/watch?v=11NHjiEYnI0

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