I made this spinning top card (ISO/CEI 7810 ID-1) to enter the Kit Cards contest.
The credit card format follow the ISO standard but may be a little bit too thin for optimal use, but at least it works and fits in your wallet ;)
2023/07/11: Improved parameterized version with faster printing time, thinner shaft and a resizing of the discs that let you use one as a 1 € coin for your shopping cart emergencies (bottom right corner of the card).
Maximum spinning time 20 seconds with the ISO version (0.76 mm thick).
The author marked this model as their own original creation.