I highly recommend either or both of these badges from Adafruit and Pimoroni.

https://github.com/tspannhw/FLiP-Py-SmartBadges

FLiP-Py-SmartBadges

Yes, in fact, we do need these stinkin badges

Working on Some Badgers for Conferences

Code

• https://github.com/tspannhw/FLiP-badger-2040

References

• https://www.adafruit.com/product/4400
• https://github.com/pimoroni/QR-Code-Generator
• https://learn.adafruit.com/pybadge-conference-badge-multi-language-unicode-fonts
• https://learn.adafruit.com/adafruit-pybadge